Can I wire it off the MSD 7 AL 2 box

the switch needs to break the starter switch wire that goes to starter solenoid

The type of shifter switch makes a difference. If the shifter switch is capable of handling the amperage required to engage the starter solenoid
you can simply make a loop from the starter switch to the shifter switch to the starter solenoid. Use at least 14ga quality wire.

and use a relay

Was wondering if I need to go to the starter solenoid on the motor or the ford remote solenoid I have on the firewall. but can the ignition on the switch go to the ignition post on the MSD 7 AL 2

They want it to not crank
so going to that terminal won’t let it

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start but it will still crank

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Originally posted by JCDRAGS:
Was wondering if I need to go to the starter solenoid on the motor or the ford remote solenoid I have on the firewall. but can the ignition on the switch go to the ignition post on the MSD 7 AL 2

Since I bump the starter to check valves and to locate TDC, the last thing I would do is have a requirement that the ignition switch has to be on for me to move the engine.

Joe

Ignition is wired separately so you can either turn engine for valve adjusting and such or spin it before triggering ignition. for starting.
Factory GM style starter solenoids require a heavy wire as they draw more amperage then a Ford style remote solenoid. Most shifters use a light duty switch for NS that is not made to handle the higher amperage of a GM starter solenoid and the heavy gauge wire. much simpler, cleaner and more reliable to wire through a relay or a Ford style solenoid used as a relay.

If using the ford solenoid on my firewall how do I wire that in, then the start switch on the auto rod control. there is a remote start switch also on the firewall.I believe the one wire goes to the left terminal on the solenoid looking at the firewall to the left, where would I tie in the start switch??

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and use a relay

AGREED if you don’t have a relay board with starter option. Here’s how I’d do it using a relay.