From September 2006:


“I went straight to option 2 above(install 5 pin relay). Followed MSD's Tech advice to the letter. Another beautiful installation I have to say. All splices soldered and heat shrinked. (Dad would've been proud.) Engine STILL wouldn't turn off!!!(Dad would have laughed!) Sun of a BIOTCH!!! So, I studied the wiring diagram in the service manual again(remember, I only have 2 wires connected to my Voltage Regulator...Black w/white stripe and Blue...to No.1 and No.2 terminals). The book says I had 2 more wires and I wanted to find them. I unwrapped the wire "loom" in that front area and wouldn't you know it...there were the missing wires...along with the unattached ends of black w/white stripe and Blue wire from the voltage regulator!!!! What the frig? My poor baby. No wonder she gets crabby sometimes. she's a mutant!

Then I figured a previous abuser had swithched to an internally regulated alternator. I never paid any attention to it since I had that voltage regulator right there on the radiator support and I didn't have any battery/charging issues.( I should win some sort of Dumb A$$ award!)

Here's the good part: I noticed one of the wires coming from the alternator was spliced directly into the BROWN wire from the harness. A BROWN wire was supposed to be connected to the No. 4 terminal on the voltage regulator. Hmmmm...???? I cut that wire and the engine turned off properly at the ignition switch but, the alternator wouldn't charge(according to my gauge in the car). I then installed the diode. Engine turned off properly AND the alternator charges properly. The diode worked!

Tomorrow, we test drive...”


The diode is like a one way “valve”. It only allows electricity to flow in one direction.

Hope this helps.