dmaclaren

I am adding a layer of security to my 69. I am looking to install a relay and switch for a cutoff.

Where is the wiring located for the fuel pump? Any link to harness diagram or photo/location?

scootchu

Unless I am mistaken you have a stock mechanical fuel pump on your car and there is no wiring for an electric fuel pump. I imagine you could add a shutoff solenoid in the line somewhere.

JMD

Trace back the power wire from the electric fuel pump, you can add a relay anywhere in the circuit that you choose.

If I were doing this, I would run a fused wire from the hot side of the solenoid to terminal 30 of a relay,
Pump power supply to terminal 87,
Switched power (ignition) terminal 85,
Ground terminal 86,

You can put your "cutoff" on the power side by using it to interrupt the ignition to terminal 85, or to interrupt the ground to terminal 86 if your cutoff will allow.

MustangBradley

You can run your Pink resistor wire through a cut-off switch. This way when the switch is open, your car will crank and crank but never start. This is an obvious way though, so a professional thief will pop the hood and run a jumper from the battery to the coil and steal your car.

You can put a switch between the Start wire that leads to the starter solenoid, but this too is a tried and true (meaning well known) way.

My point is that you can stop the kids from taking your car with these methods, but not the professional.

And unless someone put an electric pump on your car, scootchu has it right.

2+2GT

Cutting the pink wire will prevent the car from running, but it will still start.

And there is no factory provision for an electric fuel pump.