Does your existing TCM have a label with part numbers on it?
If not then take the small cover off and get the numbers off the eprom chip.
Post up what you find.
The EZ-TCU controls the PCS the same way the OEM TCM does.
I guess TCI is able to program that without the brake signal.
Gounding the wire at pin 7 on the EZ-TCU will lock the TC.
The 32.00 military TPS will not work on your IP.
The other 2 are the same except for the electrical connector & do fit your IP.
BLK is sensor ground, BLU is signal, GRY is 5v.
Depends on which IP you have.
These are 5v. TPS’s that fit our Stanadyne IP’s.
12554488 - fits military IP’s - throttle shaft end is different.
10137417 - 93-up 6.5
14071076 - older 6.2
The single thermostat crossover was used on the first 1996 trucks & utility's built then later in 96 the dual thermostat housing showed up.
12551519 - single thermostat crossover
12554527 - outlet
It is the cooling fan temp switch.
https://www.rockauto.com/en/catalog/gmc,1994,c3500+pickup,7.4l+v8,1147878,electrical-switch+&+relay,radiator+fan+switch,4312
You can download the 82 service manual & electrical schematics here-
http://www.mediafire.com/download/0jpoyh1zecydkn8/1982_GM_CK_LIGHT_TRUCK_Wiring_Manual_1B-1G.pdf