I tried the diode, it doesn't work with the Motorola alternator. The ballast resistor does. It's not used inline with the coil like you'd normally use it. The instructions show how to install it. -Steve- ----- Original Message ----- From: Guynn <amx69@xxxxxxxxxx> To: <gonzo@xxxxxxxx>; <mail@xxxxxxxxxxxx> Sent: Tuesday, January 04, 2005 5:51 PM Subject: Re: Changing 72 SST 360 Distrbutor - MSD > Steve, > > I don't think the ballast resiistor is suppossed to be used with an MSD > box. The thing is suppossed to have peak voltage available. > > Get a set of instructions for a MSD 6 and you will see that a DIODE is > called for to stop the run on problem. Or, you can simply snip the wire > feeding your Dash light for ALT. and you will stop hsaving run on. > > The light comes on, this back feeds the MSD and the car runs just like > the key was in it and it was running. Add a Diode as MSD says, or snip > the wire and you can toss the ballast resistor. > > In case you did not know, there is a book available thru MSD with every > wire diagram for all their products. This is a great book to have if you > are messing with Hi.Po cars and MSDs. It covers every type distributor > hook up as well. > > Regards, > Randy Guynn > > Regards, > Randy Guynn