I meant the copper straps but called them wires. If it has 2 of them & has an extension about 1/2 to3/4 long than it is the heavy duty. If it is listed for a 350 it "should" be the HD. You could have them pull it & see. If you like to fix stuff yourself you can get one at the salvage yard & o=haul it yourself if its not all burned up or tore up inside. They are easy to work on. The Ford type selenoid helps a lot. I use one on every thing I build. It takes more than a small amount of current to pull in that plunger. You can lose voltage going through the ignition switch & neutral switch if it is an automatic. They only cost $5-10 & can be wired like 64 posted.
