Could someone tell me what size bolt is used for the center of the engine wiring harness (driver's side firewall, where main engine harness comes through firewall and is plugged into each other)? The center of the harness takes a bolt, which bolts the two harnesses together and mine is missing. Hopefully I'm asking this question clearly enough. I'll post a pic. if no one understands what I'm talking about

 

I would assume a 5/16 maybe a 3/8

 

Thanks. I'll give those sizes a shot.

 

NP tell me if they work