Originally Posted by RIWWP

Darkbrew, it's actually easier than that here.

acherry370, there is a wiring loom that runs from the engine bay along the top of the transmission back to where the shifter is. The last 2 connections that this loom makes is actually a set of 4 plugs, 2 black, 2 white. They are the neutral switch (white) and reverse switch (black) wiring. They run into the transmission to two sensors there to detect if the car is in reverse or neutral, so the ECU knows to switch over to the reverse or neutral fueling maps. If there is a short in one of these, it will blow the ign key fuse. Since it is only blowing when you put it into reverse, then the issue is with the wires for the black connectors going to the reverse switch.

If you can get under there and disconnect the black connectors (2 of them), you can leave them disconnected (tie them up out of the way) for the short term until you get home and can fix the wiring short. The car will still run forward fine and still reverse, though just might not behave as smoothly in reverse, and your backup lights won't turn on.

Originally Posted by Tony Watlington

Very thorough explanation. since im trying this with the tranny still installed are you testing the male or female ends. It looks like the female ends in the pic but I wanna be sure. Thanks again for the post.

Originally Posted by Jon316G

It would be the male ends. The connector has a flat blade style contact.
You can easily follow the wire from the neutral switch since its a couple inches away.