6 Pole Kill Switch Question
 

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On my 68 I want to make sure the "main electrical feed circuit" I tap in to for terminal 1 (ground to resistor) is the larger cable that use to connect to the + side of the battery? Any recomendations on how to tap in to the large cable, the cable is 4awg and the wire to terminal 14awg?

you can use any wire from the battery, doesnt have to be the large cable. You're trying to prevent alt destruction, or car continuing to run by feedback through the system. Is your car carbed or injected? (stock engine?) - (i should say, EFI) If tis EFI, its simpler to run the cutoff cicuit to the DME relay, not just the coil, that way there is no way for it to run by backfeeding through the alt.

The car is carbed, no DME or EFI. I already have it cutting the ignition.

John Cramer are you out there?

There are some clamp type wire "nuts" in the electrical isle of all the home and hardware stores that will put these two dissimilar sizes together snugly.

BD,
I did my '76 a couple months ago. All you need is a large loop connector terminal that will fit on the "main electrical feed circuit" side of the switch and attach to a smaller wire.
Run the small wire from the "Main electrical feed terminal" to one of the set of contacts that are normally open when in the run position.
From the other side of the normally open contacts run the same size wire to a small terminal block you will install to a convenient location near the fuse block.
On the other side of the terminal block install the resistor.
You now have the option of putting the resistor across a second terminal block and running a small wire to the chassis sheetmetal for a ground.
Or put a small terminal on the other side of the resistor and screw it to the chassis/sheetmetal for a ground.

This is important.

Make sure you wire to the normally open side of the switch when it is in the run position.

The large contacts terminals are normally closed and one of the remaining small contacts are also normally closed.

Check them all with a meter to be sure you are wiring to the correct terminals.

The idea is to break the large wire circuit and the power to the ignition when turning off the cutoff switch.
The normally open switch will provide a resistive ground path for the alternator which will prevent its destruction.

Remember the resistor is on the Alternator side of the switch, not the battery side.

This has been written up several times in the racing forum. You might also try searching there...

Which brand kill switch is that?