jiminy here morning

guys im working on the 409 today trying to figure out if i need a ballast resistor or if the car even had one to begin with any ideas on this thanks


Well Known Member
Supporting Member 2
Are you running points? I would simply go to the top right hand corner of this page and type in Ballast Resistor and see what the search brings up. There are several answers on it.


Well Known Member
Supporting Member 1
My understanding is that all factory 409’s have a big white ballast resistor on the firewall, near the master cylinder. Other engines have one built into and hidden in the wire harness. The value of the resistor varies with the hp. I think the two wires are pink

Get an Assembly Manual! It has an amazing amount of info, and will answer tons of questions you might not even think to ask.

Just my opinion.