Electrics are giving me headaches. Added new light bar and brake light modulator to my 2005 800 classic. Light bar is on its own 30-amp circuit with a separate relay fed with the ignition switch. Had some light issues which I thought I fixed by re-organizing the relay connections. BUT now am on my second battery and in the space of three days the new one has gone flat - won't even light up my circuit tester across the posts. Will open up the headlight tomorrow to see if that wiring is the problem. This is no fun.
