Usually, the ground is the two screws that hold the solenoid to the body.  Make sure the solenoid is clean and the screws "bite" into the metal.  Again, usually, there is a ground strap that runs from the engine to the body, usually to the firewall.


54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ

yes to complete the circuit to activate the soleniod  to allow power to flow to the starter 2 ways to  grd it with a grd strap or grounded with a bolt   trough the bracket  provided the mounting area has a good grd 

Does the fender or firewall mounted starter solenoid require a ground?

tom in iowa

54 Merc wagon

54 sunvalley