Re: Mysterious engine dieing...help
When you say, "Main Power Wire" to the 30 amp switch, do you mean the small red wire or the Large red wire?
If you added a bunch of wire and a 30 amp switch to the large red power wire you screwed up big time...
MSD modules LOVE current, and draw way more than 30 amps, (Hence the 8 Ga. input wire...).
Lets hope you didn't ruin the switching transistors...
Lucky for you, MSD has the best Tech department I've ever seen, and they will repair almost anything but gunshot wounds for free or cheap, (usually shipping and insurance, one way, they pay the return trip)
If they open the box, they will put ALL NEW INTERNALS IN every time...
Give them a call, Tech Line 915-855-7123, tell them what's going on,
(only I'd 'forget' to mention the 'switch' if I were you...)
In the future, if you want to disable the MSD unit, run the small white wire to your switch, and ground the other side of the switch. This will keep the box from firing, and effectively kill the ignition.
So many cats, so few recipes...