Slow 68 mustang - Big Girl Pearl or "Yellow Fury"

[arcane73]

Wow, thanks so much, this is GREAT info. I assume you're also going to run grounds from the engine to the front frame rail to complete the loop? You must be running a traditional starter, I'm running a PMGR starter, so would have to make some changes accordingly. Is that ground stud something other than just a bolt welded in place?

I hadn't even thought of moving the main power lead to a stud on the firewall, but thats a GREAT idea!

Happy to help!
I will be going nuts when it comes to grounds. I'll run one from front rail to engine, core support, and radiator. I haven't bought a starter yet. If i go with a pmgr, I'll likely run a second activation wire to the solenoid on the starter to prevent run-on. I could probably even piggy-back from the existing one under the dash. The ground stud is actually a weld stud. I found them on McMaster Carr - https://www.mcmaster.com/weld-studs/
And having the main power lug on the firewall makes so many things easier. Inside and out!