These older box's need to see a ground feedback from the solenoid when they are not activated. You are better off getting a digital retard as they do not need that. You can get creative with a relay that will revert back to ground when not activated, I've done that with an NOS mini and an old 7AL3 box. You have to be careful with these because if they do not have that ground feedback it will change your timing setting by whatever chip is in it, it's been awhile and I can't remember if it adds the chip amount or subtracts it. I think it adds it if I remember correctly.
@@glenbrannon7224 According to the instructions, the 8728 cannot be used with an MSD box. The 7AL-2 has a rev limiter in it already. Is there a particular reason why you want the soft touch one? I've never had any issue with the built -in one.
