Can someone tell me how to wire a universal coil up on a 12 volt bike? The factory coil has two wires,Orange and brown. The coil has only a one wire option. So how do you wire it?
This is the coil
rover.ebay.com/rover/0/0/0?mpre=https%3A...2Fitm%2F323193718928

Won't work. that's an ac magneto coil for sale but it's a bit confusing or ambiguous in there wording. I'll go back & have another read as only glanced, but single wire she's ac ignition--!!.

Yes, magneto ignition coil.

You need a battery ignition coil.

Ok thanks. Could you look and give a recommendation.

If yours looks like the one in at this link, that's what I would get. Direct fit replacement and a good part.

www.economycycle.com/shop/yamaha-rd25035...ignition-coil-23-99/

I think you can get a discount from John by using the code 2SW

An automotive coil from the auto parts store will work too... mounting is the tricky part.