I am putting in an Electro Cruise unit from another full-size 65' Pontiac and noticed that both the electrical wiring harness and vacuum release tube (going to the brake pedal) are rather short (about 2 to 3 feet) for connecting to the power unit in the engine compartment.

So, I was wondering if any one knows where in the firewall these two "cables" should be routed. Do I need to make a new hole in the firewall?

I look forward to your response!

Thank you.