Originally Posted by Neeek
Just wondering where you good people put your diode for those running an MSD ignition?
MSD says the diode needs to run inline to connection 1 on the voltage regulator, but of course thereís a 4-pin plug in there so Iíll have to tap the wire somewhere aft of the voltage reg to install the diode.
Sounds correct, but 2 questions:
1. Automatic or stick shift ??
2. How high is your idle???
Automatic trans. just put it in gear before you shut it off...
Stick shift then same thing, just ride-out the clutch and then shut it off..
Sounds like your idle is way too high..timing run-on is normally caused by too high an idle and not timing (as is thought)...
It's not that kind of "run on".
The OP is talking about the ignition box actually staying energised (powered) and keeping the engine running due to a voltage feed-back issue.
Even tho the key is switched off, the ign box continues to "steal" power because of a back-feed voltage thru the ALT light circuit.
Installing the diode in-line with the ALT light circuit stops the feedback and lets you shut the engine off with the ign switch.