Grand Prix 125
Main Motorcycle: '01 Bonnie
Join Date: Jul 2011
Location: North Hampton, NH
HELP - Wiring Issue
I started my DIY fender eliminator this morning. Things went really well until it came time for wiring the brake light I picked up from Dime City Cycle. There was no wiring diagram provided with the brake light so I had to attempt to figure it out on my own. There were three wires, black, yellow and red. The old wiring harness I pulled from the stock headlight had black, red and blue.
If I looked at the wiring diagram from my manual correctly, black is the ground, red is the tail light and blue is the brake light. I played around with the wiring form the light to the harness and ended up connecting black to black, red to red and yellow to blue.
I found that with this combination the tail light worked, but when I hit the brake light, the other filament didn't light up - I'm assuming that it should have. I then tried black to black, red to blue and yellow to red and this netted the same result. I ended up with the first method; black to black, red to red and yellow to blue.
I connected everything and taped. When I blew two fuses I realized that the heat shrink wrap that I had used didn't fully protect all the metal so I taped everything separately and then re-wrapped the harness.
I got everything ready for a ride, started the bike up and then found that my tail light wouldn't light up. My brake light worked, but that was it. I pulled the wiring apart again and tried black to black, red to blue and yellow to red to no avail. I pushed the bulbholder out from the DCC light and found that yellow was the ground and black and red were connected to the nodes. I rewired my black from the harness to yellow on the light and tried the other positive combinations and still nothing.
Now i was back at ground zero. I ran and grabbed the old light and connected everything back up the way it was when I cut it, black to black, red to red and blue to blue. Even that didn't give me a tail light - only a brake light. I'll post some pictures, hopefully that will help you guys visualize what I'm seeing.
I don't have a clue what is going on? How does the tail light work and then all of a sudden it doesn't? Is it possible I blew the relay or something? I was thinking the relay was for the brake light though, not the tail light. Any help would be appreciated it.