LED fog light install on a 2016 XRX 1200 - Triumph Forum: Triumph Rat Motorcycle Forums
Tiger 1200 - Mods & Workshop Workshop and technical talk for the 1200 Tiger Explorer

 
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post #1 of 3 (permalink) Old 06-03-2019, 02:57 AM Thread Starter
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LED fog light install on a 2016 XRX 1200

Hi, when I bought my Explorer it came with the Fog light switch and connectors for the lights under the front guard. But no Lights. I didn't want to pay over $400 for 2 lights, so I bought a couple of 20W LED's. After bolting on and wiring, when I turn on the fog lights they light for a second then go off. I assume they are overloading the circuit....? Does anyone know how to fix this? I have an unused loom and switch that came with the lights (no relay) but I would rather use the OEM switch, rather than mount another switch beside it.
Ian
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post #2 of 3 (permalink) Old 06-14-2019, 05:20 PM
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Main Motorcycle: 2017 Triumph Explorer XCa
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Other Motorcycle: 2016 KTM 690 Enduro R
Extra Motorcycle: 2013 KTM 350 XC-F
When I changed from my 2013 explorer XC to my 2017 Explorer XCa, my aftermarket lights would not work in the factory wiring hooked up to the factory switch. Not sure exactly what changed but have a feeling it's something to do with a change in the resistance of the new lights and the ECU believes that they are not working, thus killing the power. Just a guess. If that's true then possibly a set of resistors typically used for LED turn lights may work, I did not try.

I decided that I would power my lights separately, hooked to a Rowe PWM60. So I just needed to figure out how to get the factory switch to work with this. I ended up using a small electronic component called a mosfet(
). The mosfet has three parts, the source, the drain, and the gate. This is connected on the ground side of the wires that power the lights. The ground wire from the main ground goes in the source. The ground wire then leaves the mosfet through the drain and goes to the lights. The third part is the gate. For the gate, I plugged in a single wire on the positive side of the factory fog plugs that are under the front headlight. This positive wire then connects to the gate.

What happens when I turn on the factory LED switch, is that the power through the gate to the mosfet, completes the circuit between the source and drain, thus turning on the lights. When the switch is turned off, the lights go off.

It's a bit complicated but avoided me having to add another switch to the handle bar.
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post #3 of 3 (permalink) Old 06-15-2019, 05:38 AM Thread Starter
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Thanks YYC, that sounds exactly like the solution I need. In the meantime I ordered a set of 10W LED's and wired them in today.
They work surprisingly well for such small lights, haven't had them on the road yet, but in the back yard they look ok.
Not as good as the 9" LED's on the 4x4, but you can't expect too much for $25.00
I could have wired the 20W directly to the battery, but I would have needed to add another switch, not ideal.
I'll look at your set up and see how I go. Thanks very much for the reply.

Ian
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