[tccrab]

SPDT Relay : (Single Pole Double Throw Relay) an electromagnetic switch, consist of a coil (terminals 85 & 86), 1 common terminal (30), 1 normally closed terminal (87a), and one normally open terminal (87) (Figure 1).

When the coil of an SPDT relay is at rest (not energized), the common terminal (30) and the normally closed terminal (87a) have continuity. When the coil is energized, the common terminal (30) and the normally open terminal (87) have continuity.

Pin #87: Purple wire to the starter
Pin #30: Battery positive 12v
Pin #86: Battery ground
Pin #85: Purple wire from ECM
Pin #87a: Not used


The purple wire lives in the big loom just after the ECM. Peel back the ribbed covering and dig around. There is only one purple wire.
Cut the purple wire carefully noting which end leads down to the starter and which end comes out of the back of the ECM.
Use similar sized wire (10 or 12 gauge if I recall correctly).
Black wire doesn't stand out like bright red or yellow.

I hid my relay under the ECM, Paul (in the picture above) hid his in the battery area.

I modded mine 4 years ago and have *NEVER* had a "Dreaded No Start" again.

TomC
'Crabs