What do you read for voltage to the distributor ?

[BeerCanBilly]

Is the distributor wired from the coil after the ballast resistor to drop the voltage ?

Working on a car that has been gutted and sat for years. Is their an online wiring schematic anyone knows of ?

[Napes]

sure what the voltage is coming outa' the coil, but I know you don't want to stick the output wire onto your tongue when it powered-up.

[Chris_B]

The distributor is wired from the "-" side of the coil. The ballast resistor is in series between the +12V power source and the "+" side of the coil.

Dunno if anyone has a wiring diagram posted; however, if you post the year of the car and the wire colors about which you have questions, someone will likely help you out.

[BeerCanBilly]

cheap dealer lists them at $53 !!!

[Chris_B]

Presuming you need one... what kind of coil do you have?

Also, there is nothing unique about the BMW resistor. Many cars use a ballast resistor, and I would bet that you can get a compatible (correct resistance) resistor for ~$10 at your local auto parts store.