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Hello, everyone.
Just bouught a used '04 with about 15k miles, in a good overall condition. Fixed the cam chain tensioners and regulator/rectifier unit. While doing so, I noticed the reserve lighting unit is missing, i.e. not installed at all. The 6 contact connector from the bike wiring harness is simply hanging freely. In addition, there is a wire (blue/yellow) leaving from this connector which is cut. I stripped the harness further up, trying to find the other end of it, with no success. I can't find the continuation of this wire, yet the harness seems to be untouched.
Page 15-36 of the service manual claims this blue/yellow wire supposedly goes to the dimmer switch. But the dimmer switch is up front by the headlight and I can't see any cut wire on the harness. I found wires with the same color leaving from the fuse box, but they turn towards the front of the bike, never reaching the lighting unit. I assume the bike electrical system was modified. Any clues, please?
 

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For starters..

Does your headlight gome on when you switch on the ignition or only after you have started the engine?

Disconnect the fuse box (a.k.a junction box) 8-pin connector and the headlight bulb. Is there continuity from the blue wire of the 8-pin connector to the R/BK or R/Y wire of the headlight connector?

These tests should tell us if the headlight relay is bypassed and if the headlight is still powered from from the headlight fuse.

I found wires with the same color leaving from the fuse box.
There should be no blue/yellow wires going to the junction box (as far as I can see from the wiring diagram).
 
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