Anyone know the size of nut that is used on the large post on the starter solenoid, mounted on the firewall behind the black cover??

Trying to wire the electric fan and it would be easier with a second nut.

Thanks!!

 

Ummmm....yoooo hooooo?!?

Anybody home?!?

 

I think it is 3/16's. I used it for my intercooler supply. I'm at work right now so I'll have to check when I get home.