Basic ignition question, using MSD-6AL and MSD-8680 boxes

Hi all,

I'm not an ignition expert, so please bear with me.

The prior owner of my '71 Satellite added an MSD6AL Ignition Box (model 6420) and an MSD 8680 Adjustable Timing Controller. They both worked fine, but the wiring was a real rat's nest, so I've been working on tidying things up. Unfortunately, I inadvertently disconnected one particular wire, and now I'm not sure where it goes.

The Ignition Start wire (in socket 22 of bulkhead connector, 1st pic below) is currently wired into the thin Red wires coming out of both MSD boxes.

The wire which came loose is coming from socket 23 (Ignition Run) in the bulkhead connector (leads to Ignition-2 on the ignition switch). It appears that this wire might have been connected to the Ignition Start wire in socket 22 (Ignition-1 on the ignition switch). Is that possible? Please advise, thanks.

[Edit: I just found another wiring diagram (3rd pic, below) which shows that sockets 22 and 23 would ordinarily go to opposite ends of the ballast resistor.]

Roger

Yes, it's possible and desirable because the msd doesn't require separate start and run circuits, it's either on or off. Typically start and run are ganged together and then connected to the msd. I don't think any of the product I sheets out there cover that.

Ok, great! I was wondering about that but, you're right, none of the MSD instruction sheets mentioned that at all. Thanks very much!!

I have the 6AL-2 that has programmable timing and boost retard.All set with a laptop!

I have a non programable digital MSD 7 and a new MSD grid box sitting on the shelf waiting for the new drag car to get completed to go racing in

OP, Mopar electrical engineers and some of the other car makers wired all the early 12 V ignition systems that way to get 12 volts to the points while cranking on the starter to help those car start easier back in the day before solid state ignition systems where installed stock on the everyday cars