MSD Questions

You need a voltmeter and find which wire or wires are 12 volts when the key is in the run position. The heavy pos & neg should be run straight from the battery. The resistor can go in the trash can. If theres more than 1 wire that is "hot" when the key is in the run position either use it for your choke or taped them up and tuck them neatly away. Oh, if U use the key to crank the motor--I have a push button switch--then both the cranking and the run wire needs to both go to the red wire. Forget sometimes. I keep the push button switch under the dash, out of sight, just in case somebody graps my keys and jumps in the car, ha ha. Motor goes click click like the battery is too weak--hey you never know.

I like using MSD noise filter on the heavy wires but then I believe the 7al or the 6 digital boxes are the only ones worth using, with the 7al my first pick.

Sometimes the voltage reg runs from the resistor but theres no need, it just jumps over and does not use the resistor. Guess I don't mind cutting and re soldering and running new wires as needed. Its 2008 now, Mopar stuff is history or for 30 year old gasoline which is never coming back. The 6 series boxes are EPA approved so right there it tells you the spark is weaker than the 7 and higher boxes.

I ran the 6 box for years and notice a big difference how the motor ran cold once the 7 box was on, lets just say I won't touch another 6 box again unless the car needed to pass smog testing.