Hey guys
Been lurking for a while here but now I need some help.

Did some work on my 99 nightrain but now I'm having electrical issues.

First off I ditched all the blinkers/running lights I now have just a factory headlight with a RSD tracker tag bracket.

When I turn the key to run the headlight and tailight dim then brighten, and the circuit breaker closest to the relay in the under seat box clicks on and off, and the speedo lights flash on and off and the odometer does not display. I am stumped looking in my service manual.

It appears the turn signal module feeds the speedometer, so I would assume that I fawked something up when I deleted them.

If anyone has a better schematic than the factory manual I could likely figure it out.

Thanks in advance


Steve

 

bump ttt

 

Don't think it gets any better than the factory schematic.It's pretty easy to follow. Your bike like almost all Hd's need the resistance from all 4 signals to work.I used 2 ballast resistors to straighten out that problem on my 96 Sportster.

 

Thanks for the tip on the resistors on the signals I will give it a shot.

 

Just a thought here.... but if the circuit breaker is clicking on and off, wouldn't that generally be an indication of high current draw? Basic rule of thumb is that if you reduce the amount of resistance on a circuit, you also reduce the current draw.... I would be looking for a short to ground, which would draw high current and case the circuit breaker to activate to protect the wiring.

 

If you reduce the resistance in a series circuit, you increase the current draw. You're correct on the thought that if the circuit breaker is tripping you probably have a short to ground somewhere.

 

Fixed it.

Poked around with my multi meter for a while and determined I had a short to ground in the circuit. Traced it back to the front brake micro-switch spade connector grounding to the bars, put a wrap of tape around the bar to eliminate this condition.

On another note you don't need turn signals in order to have your speedo work, I just dead headed the pigtails for all four signals and everything else works the way it should.

Thanks for all the help guys, I just needed to slow down and remind myself of electrical principles