NOTICE:  These are tech pages explaining how I did these mods to my bike.  In almost every case -
I DO NOT SELL THE PARTS DESCRIBED.  I do tell you where I got them.  EXCEPTION - I do sell my custom exhaust mods. 

Tech Tips
Valk Products
My Valkyrie


Install VTX Signal Pods as Run, Turn, & Stop  with Night Lights Switch






      Because they make you more visible.  OK, because they look good - and no one else has them on a Valk (Except me).  And they aren't likely to - these suckers are SPENDY.  Secondly, this mod fixes the unreadable instruments at dusk problem.


      If you use VTX pods all around, about $300.  If you just change the back pods to Honda fronts (to get dual filiments), then about $60 using non-Honda pods.  You can find non-Honda brand pods for about half the price - my dealer, Aurora Honda (303-341-7200) carries them.  BTW, they come from the same place - the casting marks inside in the plastic are identical, and I could find no other differences when comparing them side by side.


      All day.

    Materials - much less if you just replace the rear pods with fronts. Also, this can be done using single-filiment pods, which is what the VTX pods are.  I haven't tested this and found what ohm resistors are needed to cut the light in half for the running light function.  But that wouldn't be difficult, especially using a variable resistor (aka POT) from Radio shack, in the range of say 0-1000 ohms.  Put it in place of the resistor, turn the pot dial until you like the brightness, then measure what resistance you used with a ohm meter.  Then go buy resistors that size. You will also need diodes to prevent the backflow of running-light current into the brake light circuit.  See the diagram below.


    • two each Hondaline 2004 VTX1800N left and right marker light pods - P/N 33450-MCV-R11 & 33400-MCV-R11.  They list about $70 each.  I found them for fifty bucks each due to my dealers discount.
    • two 5-pin relays with Normally-Open & Normally-Closed terminals (87 & 87a respectively), available at any auto parts store (print & take this with you if you're not sure what to get).  I used Niehoff #RL36621 from Checker at $4.99 ea.
    • two  amber 1157 bulbs at any auto parts store for the fronts - $5
    • two  red 1157 bulbs - I used Xenon bulbs from NAPA made for Balkamp, nos. 735-5442 504102B $9.99  EDIT 6/06: Auto Zone has red LED cluster 1157 bulbs for about $15 - these are REALLY bright, look cool and don't generate heat. 
    • one 2-pole on-off toggle switch - about $3
    • four double contact sockets for 1157 bulbs - I used Conduct-Tite brand P/N 85802 from Checker Auto parts - $2.99 ea.
    • spool of 18 ga wire
    • soldering supplies
    • heat shrink tubing
    • female spade connectors
    • wire ties

    Tools I used - much less if you just replace the rear pods


    • Metric T- handle allen wrench set
    • soldering equipment
    • heat gun or hair dryer or bic lighter
    • needlenose pliers
    • wire stripper
    • 1/4" drive metric socket set and 6" extension
    • Dremel with cutting wheels
    • Belt sander
    • Test probe/light and/or multimeter


      This mod is expensive if you use VTX pods.  So we want to do it right, so as not to damage components and have to replace them.

      There isn't enough light on the back of the Valk standard & tourer at night.  Daytime, the running lights won't help, and the rear light pods won't work long in the heat of the day with running lights on, without melting.  I know that because I melted two pairs of the Valk front pods by installing them in the back, behind the saddlebags, and having the running lights on all the time.  It finally sunk in and I switched them off in the daytime.  At night, the ambient air is cool enough, and the sun isn't contributing to their heat - and they never melted again.  These light pods are EXPENSIVE.  So we don't want to risk melting them by having the running lights on in the daytime when they don't help visibility anyway.  The brake and turn signal filiments are only on momentarily, so melting isn't a concern.

      Look at the wiring diagram.  Look at the brown/white circuit.  It powers the instrument lights, tail, license, and front markers.  We will use it to power the rear markers too. Notice there is nothing on the brown/white circuit that needs to be on in the daytime, except the one brown wire that powers the front marker lights (needed for our circuit).  Notice in particular that the instrument illumination is on the same circuit.  If you put a switch on this circuit and call it the "night lights" switch, you will be reminded to turn it on when you can't see the instruments  after dark.  BONUS - This is another mod you will find on my tech tip pages - it's a good idea to switch the instrument lights off in the daytime, because then there is plenty of contrast at dusk to see the numerals -  they no longer disappear due to the light from inside matching the skylight reflected off the bezel - the numerals appear black and you can see them until it's time to turn on the Night Lights!

      These light pods look sharp - they are more pointy than the Valk pods, they have clear lenses, and they have clearly visible facets on the reflector - makes the light inside look like the current style for upscale cars - and looks a bit like an expensive LED light fixture.  However, Honda made this pod with a single filiment bulb - including the ones for the front (unlike the Valk pods) - and uses a sophisticated circuit to change the brightness of that one filiment.  I was working on my design of such a circuit, when I realized it was much easier and cheaper to just replace the sockets inside with dual filiment sockets compatible with 1157 bulbs.  So you need to use a Dremel with cutting wheel to cut up the existing single filiment socket to remove it.  I also used a belt sander on the back rim of the hole until it was flush with the smaller I.D. hole to reduce the depth of the socket hole in the reflector to be compatible with the spring-mounted sockets I had bought.  It was the right power tool, but you can also do it with a file, or a dremel with a burr (rotary file) or the like.

      This mod can be done much cheaper using Honda Valkyrie front pods.  Replace the amber lenses with clear ones from Auto Zone, and use the red krypton 1157 bulbs.

      Now, the details:

      Switching the brown/white circuit: We want to switch everything on the brown/white circuit except the brown power wire to the front marker lights - we need this part of the circuit to control the relays.  There is a 9-pin miniconnector inside the headlight nacelle, black in color, that connects the right handlebar switch loom to the bike circuits.  On the "bike side" of the connector is a brown/white striped wire.  Right next to it on the connector is a brown/blue striped wire.  Follow the brown/white wire until you find where it connects to a brown only wire.  Attach a jumper wire from the Brown/blue wire to the brown only wire using the soldering equipment and heat shrink tubing.  Sever the connection between the brown and brown/white wire.  Somewhere on the brown/white wire, after it leaves the connector but before it connects to any other wires, install the toggle switch to break the circuit, and place the toggle where you can reach it easily with gloved hands.  This will be the "night switch".

      Replace the single filiment sockets in the pods with the dual filiment sockets. When you position the socket, install an 1157 bulb and align it so the filiments are parallel with the formed lines in the reflector - this makes the light reflect more brightly and evenly.  After you're done touching the bulbs, clean them with alcohol - especially the xenon bulbs.  (Don't assume the factory didn't handle them with bare fingers - clean them anyway.) The sockets come with 2 black wires.  You need to add a ground wire.  Cut the black wires of the new socket to about 3 inches, strip and solder them to the original loom wires of the socket.  Use heat shrink tubing for insulation.  Connect the running filiment wire (wired to the thinnest and dimmest filiment) to the orange/white or lt. blue/white wire in the loom. This will be the marker light that will be connected to the brown/white circuit.  Use the green wire as ground. Connect the 16ga. wire you add, to the brighter, turn/brake filiment.    Use electrical tape and the Dremel to trim the metal of the socket attachment spring as necessary to arrange the wires stuffed into the pod so they don't get cut and shorted by the metal of the socket and it's spring attachment.  Add a wire soldered to the socket to act as ground. (Drill a small hole in the spring mount, pass a piece of 16ga wire through the hole & solder it there using paste flux.)  After I replaced the sockets, I reused the loom that came with the new pods so I would have the colored wires.  I pulled the 2 wires out of their loom, added my third wire, stripped the ends and soldered them all together and to a single wire that I could feed through the loom and pull all 3 wires through the loom.  I used Wire Pulling Lubricant to make it easier but you could use liquid soap or any non-petroleum lube just as well.  I believe lithium grease is soap not petroleum based, so it shouldn't degrade rubber.

      The VTX light pods phsically attach the same as the Valk pods do.  No mods needed there.  If you want the front marker lights on all the time, except when the turn signal on that side is activated, connect the orange/white (left) and lt. blue/white (rt.) wires to the circuits the same as the stock Valk pods, to the orange/white wire or the light blue/white wire depending on the side.  As for me, I prefer to have the front pods on the night circuit, so the running filiments are connected to the brown/white circuit instead of the front marker circuits.  Connect the green (ground) wires to the green ground wires in the headlight, and the wire you added to the orange or lt. blue turn signal circuits as appropriate.

      In back, connect the running light wires to the brown/white circuit, the green ground wires to the green wires in the bike loom, and the orange and blue wires to their corresponding colors in the bike loom. 

      The Valk has an unusual design for the turn signal lights in front.  The turn switch is actually two switches in one - the second part of the switch controls the power to the marker light filiments - when the turn signal is activated, it interrupts the power for that filiment on that side to maximize contrast.  How convenient!  We can use that to control relays for seperating the circuits in back.

      This is the diagram for the Interstate Turn signals mod slightly modified - we will use the same circuit  to set up the rear markers as run, turn and stop lights.  Just replace the green/red (Interstate) brake circuit reference with green/yellow (standard/tourer).

      NOTE 5/17/08: The circuit below shows how to do this with 1156 pods.  This circuit will work best with LED array taillights. I have not tested it with filiment lights, which will certainly change the resistors rating - which needs to be adjusted anyway depending on the requirements of your LED arrays. If you do this to 1157-equipped lights - you would not add the diodes and resistors and tail light circuit connection, to the left of the relays, in the diagram.  The tail light circuit would instead be connected to the running light pin of the 1157 sockets.


      Here's a diagram of another commonly found auto relay, and the type I used in this particular project.  Thanks to Chet Walters & his great graphics for the diagram.  Whatever type you get, be sure the output pins are 87 (normally off) and 87a (normally closed), not two 87's (normally off).  The latter type relay is used specifically for wiring something like two spots, to save the installer from making a Y-harness.  That type relay looks the same except for it's wiring diagram but it won't work in this circuit.

      Be sure to solder all connections, and use heat shrink tubing - that is MUCH more reliable than crimp connections.

      Here's what my relay install looked like before I loomed the wires.


      In the looms up front (in the headlight on a standard) locate the light blue/white wire (right running light) and the orange/white wire (left running light) inside the headlight.  They are inside their own little loom.  Splice into them, and run the wires along the frame under the tank using wire ties, to where you want the relays (probably under the seat?).  Mount the two relays.    The relays used here have one terminal each for Trigger (pin4, 86), Load (pin1, 30/51), and Ground(pin5, 85).  They also have  two "battery" terminals 87 & 87a (that is, we will use them for the power side of the switch, they are usually used on the load side, but the relay doesn't care which way the power goes though the switch).   Pin2 (87a) is normally closed, that is, 2 has continuity with Load(pin1, 30/51) without power at the trigger(pin4, 86).  Pin 3 (87) is normally open (no continuity with Load without power at the trigger).  Of course when the power is applied to the trigger their state is reversed.  Clear as mud?

      Connect the wires you ran from the loom in the headlight to the triggers (pin4, 86) of the relays (one wire to each relay trigger).  Connect the brake wire (green/red -I/S, green/yellow std, tourer) FROM THE BRAKE SWITCH under the seat (it's in the loom that runs up the fender under the seat) to the Normally Open "battery" terminal(pin3, 87) on both relays.  Make a "Y" harness with a screw terminal on one end and the female spade connectors on the other 2 ends and connect them to ground on the relays (pin5, 85) and the screw terminal to your favorite underseat ground (I drilled and tapped a hole for the ground). Connect the right and left turn signal  lines in the bike loom (cut the circuits, so the relay switches them) FROM THE TURN SIGNAL SWITCH to the Normally Closed "battery" terminals(pin2, 87a).  Right turn line is light blue. Left turn is orange.  They are also in that same loom under the seat.  Switched output leads (Load) go to the corresponding turn signal lines TO THE LIGHTS.

      You see what you're doing.  Using the switched marker light circuits in front to select the brake lights in back to operate normally (relays active) or disabled on the side you're turning to (relay triggers off), with the Normally Closed side of the relay substituting the turn signal into the brake lines.

    Debugging - Problems I had

      One of my deep-blue bulbs, the pins were incorrect in relation to the contacts.  Only the brake filiment would light with either circuit.  I'll get it replaced, I still want to have deep blue in back when the mood hits.  Meanwhile it's xenon red.  EDIT 6/06: I changed to the red LED cluster 1157 bulbs at Auto Zone.  They didn't dim the running light brightness enough.  I added a  resistor to the running light feed of each pod to increase the difference when the brakes are applied.  220ohms results in a plenty bright running light with these LED "bulbs", and easily twice as bright when the brake / turn signal is activated.  Resistors are available at Radio Shack.

      DO pay attention to the alignment of the filiments in relation to the reflector.  It makes a big difference in the light output.

      I had to re-ground the green circuit, both front and rear as the Honda ground had too much resistance and apparently the Kisan taillight modulator modulates the ground connection.  I will seperate those circuits later by adding a seperate ground wire to the back but I wanted to get this done so for now I have shut down the taillight modulator by jumpering the ground that otherwise passes through it.  I have the circuit board type modulator, not the one in the bulb socket.

      One of the relays was bad - wouldn't trigger.



      Well it seems like a hassle, but it sure looks good.  I have all red lights in back now, and the rear turn signals also function as marker and brake lights.  With those very stylish clear lenses I can change bulb colors easily - I have a set of deep blue lights I'd like to install until an LEO yells at me... Somehow I'm going to add the deep purple glow to the red in the rear; havn't really figured that out yet. What I'd like to do is have something like a neon black light inside the pod as well, or if I can find LED's in blacklight wavelength.


All technical mods described here are merely reports of what I've done.  You may attempt to replicate them at your own discretion and risk if you choose.  Horseapple Ranch, LLC and Mark Tobias will in no way be responsible for the results of your attempting to perform these mods on any motorcycle, regardless of the outcome.

All content on copyright 1999-2006 Mark Tobias except "Riders Say", "Dyno Day", Vallejo and Shop Manual and Alternator Review pages, and SWF and MP-3 files and their graphic icons, and any content specifically attributed to another author.  
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