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Tim, did you go ahead with your version of the mod?

I think, in theory, you're right.

For the low beam case, the high beam wire wouldn't be powered, so you'd get some current going from the low beam wire, through the resistor, to the high beam.

For the high beam case, both wires would be powered, so you wouldn't get very much current going through the resistor at all, and it would be less strain on the low beam wire.

That's a clever observation and I bet it would work. I'm curious if you've gone ahead with it.

Update:
I am just getting around to doing this. I had a 1-Ohm 25 Watt resistor that I installed between the low and high beam positive leads. It works perfectly. I took an amp draw through the resistor and I get about 3 Amps when the switch is to low beam, and 0 Amps when switch is to high beam(of course since current takes the path of least resistance). Now that I have the number of Amps, I calculated that I really need a 40 Watt or greater resistor for this application. I left the 25 Watt resistor in the circuit for testing and it works but it's getting waaaay too hot. If I did leave it like this, the resistor would eventually burn up and fail.

I just ordered a 50 Watt resistor. I'll post up an update when I get that installed.
 

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Wouldn't a relay be safer though to prevent too much current draw from the wiring for the low beam?


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More questions

You don't need a relay. You just need to run a wire from the positive lead on the low beam bulb, through a resistor, to the positive lead on the high beam bulb. That's it.


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:poke: How long have you been running this setup? Where did you get that mounting plate? How would you rate the Low beam, in terms of blinding on coming traffic? Would using diode be a good idea on that line?
 

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Nice write up. I fail to understand why some of the manufacturers do this single headlight thing when I have yet to meet a single person that likes it.
It's pretty simple really.
The manufacturers were looking into accident statistics and found that a lot more sport bikes were having cars pull out in front of them than cruisers were.
Some bright spark realised that it was because the sport bikes had two headlights, and that this caused them to look like a car at a much greater distance than what they were really at.
Hence the drivers thought "Oh look, there is a car in the distance, I have plenty of room to pull out," and only realised it was a bike quite close when it crashed into the side of them.

That is also why this mod is a bad idea.
 

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I have some side emitting strips which i want to use as my running lights and have the headlights off when bike is ON -

I want my hi/low switch to turn on my HID HIGH BEAMS


Can someone make one these for me and i will pay you , i have no knowledge of electrical stuff /relays. If interested ,you can send me a message or reply below.
 
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