dieselyoda
Active member
The other annoying thing on the wiring is that the lights come on before the motorcycle starts, draining a weak battery.
That one is easy. On all my power sports equipment that have an oil light, I piggy back a wire on to the switch and use the oil pressure switch to close the ground side of the the relay. I use the power side of the headlight for the positive side of the coil and and then just connect the power side of the headlight to the load side of the headlight.
Headlight doesn't come on until you have oil pressure. That's an old Murphy switch trick.
It's easy, it doesn't backfeed the oil light. I've done it numerous times on machines that need all the help they can get starting, like my quad I use for plowing snow.
When I hit "stuff" with the plow, I generally stall it and by the time I fix the "stuff" I just hit to cause the quad to quit, there is just enough battery to crank it over once or twice. With no headlight on, I get twice and on a good day, almost three times.
I did it on my R1100RT, my Kawasaki, a few of my friends' bikes and haven't had an issue yet.