So I just picked up this 1996 K1500 and a pack rat decided to make it it's home the last 10 years. 90% of the wires are not chewed not a big problem. But I need to know where some plug in connections go to. I've looked all over Google for diagrams but nothing. Can someone please help.

 

Welcome from Florida. Are these plug in connections under the dash? Can you post a picture of what you need?

 

Nope they are in the engine compartment I thought I sent pics with but I will get them for yah sorry.

 

You would probably be better off buying a wiring harness for it.

 

I can't find a wiring harness, unless I buy a stand alone one. I can fix everything that is wrong. I just need to know where these 3 go.

 

What engine and transmission? Also what is the position of these connectors in the engine bay if you’re standing at the front of the truck (left or right, closer to firewall or grille)?

The first 2 could be for almost anything - those 4 pin connectors were very common for many components with the only difference being the slot that’s cut into one of the barrels that would mate only with the corresponding female connector. The IAC, neutral safety switch, and TCC solenoid (to name a few) all utilized that style of connector.

I’m pretty sure that 2 pin connector in your second pic is for the ABS wheel speed sensor.

 

Engine is a 5.7 tbi and the transmission is 4L60E it's 4x4.
The second pic connector that's next to the yellow connector passenger side of the engine. The other 2 was hanging down below passenger side of the engine.

 

The 2 pin connector is definitely the ABS wheel speed sensor.

At least one of the 4 pin connectors could be for the downstream O2 sensor. Are you able to tell what the wire colors are?

 

Good narrowed the abs wheel speed! Also found out one of the other 2 is the 4wd actuator connector. Now the white square one?

 

How many terminals does the white connector actually have? It wasn’t uncommon for GM to use only 1-3 cavities in those. If the other connector was the 4wd actuator, the white one could be for the 4wd indicator switch on the axle if it only has 2 terminals in it. The indicator switch is mounted on top of the front axle, where the right axle housing bolts to the diff case.