Electrical question
 

I have a motor on a wooden cradle that I want to test run before I ship it, does the ballast resister need to be grounded to the motor since that where the ground for the battery will be???

Re: Electrical question
 

NO, NO, that would cause a short circuit to ground. The ballast resistor should never be grounded. It connects in line or in series with the ignition switch power feed to the ignition coil. Have a look at a Ford flathead wiring circuit diagram to see how it is connected. In the car they are mounted on an insulated fiber board on the inside of the firewall on most V8s. Regards Kevin.

Re: Electrical question
 

Kevin


I have the "basic" diagram BUT I wasn't sure about the ballast resistor and being grounded OR Insulated from the firewall?? SO Thank you Sir!!!!

Re: Electrical question
 

https://www.electrical4u.com/ballast-resistor/

a good site -

Re: Electrical question
 

Re: Electrical question
 

Since there is no radiator, the test run will of necessity be quite short. Why mess with the resistor at all?

Re: Electrical question
 

oA very preliminary photo of the motor, there will be a radiator with a cooling fan attached!!! That's why I "mess" with it!! as well as headers and mufflers

Re: Electrical question
 

I would install a flywheel also before running.

Re: Electrical question
 

Yes Sir, already done!!! As well as starter installed