Help identifying these connectors

[Mike Harrington]

Can someone please help me and tell me what these connectors go to. It's on an 1989 k3500 manual transmission with a 454.
I had pictures of all the wires and where they went but my phone went swimming and I lost everything.ive got most everything thing else figured out but these.
The white plug has only 3 wires that look to be a black, purple, and white wires.
The other one appears to be dark green and black

You must be registered for see images attach

 

[EvilGenius]

The 4 plug connector is for a 700R4 auto transmission. It controls TCC lockup. Not sure why you have that as your post says you have a manual trans.

The two plug connector looks like the 4wd indicator light connector.

 

[1987 GMC Jimmy]

Air injection uses the same two pin connector.

 

[Mike Harrington]

The air injection connector is already accounted for...and I figured out the four hole connector....it's for my 4 wheel drive solenoid on the front axle....I do have a manual transmission and it's not been touched, neither has the transfer case so any connectors to those items are still hooked up. The only one left in question now is that two prong connector. I have no idea what it goes to

 

[gmachinz]

Your stock fuel tank being TBI also has a 2-cavity weatherpack connector as well.

 

[Mike Harrington]

It's already accounted for as well

 

[gmachinz]

The only other thing I can think of is your reverse light switch on the trans

 

[Mike Harrington]

Well I finally got them figured out. The white four prong connector goes to the front axle...not the four wheel drive solenoid. The two prong connector goes to the four wheel drive solenoid. Now the question i i have is exactly what could the front axle have that needs power to it? The only power requirement would be the solenoid

 

[Blue Ox]

Not at all familiar with that vintage, but does it have ABS?

 

[highdesertrange]

on a 1989 K3500, what solenoid on the front axle? that should be a Dana 60, with a solenoid??????? do you meant a 2500?

highdesertranger

 

[Mike Harrington]

No it's a K3500 1989. The solenoid is the one that engages the 4x4 in the front axle

 

[Mike Harrington]

It's not a straight axle....it's IFS

 

[highdesertrange]

what am I missing here? a 1989 K3500 is a straight axle. only 1/2 tons and 3/4 tons were IFS in 1989. something ain't right. highdesertranger

 

[Mike Harrington]

Well that's exactly what it is!! It's a 1989 k3500 cab and chassis Cheyenne with a 454 TBI , a 4 speed Muncie with 4:10 gears and IFS. Supposedly came off of a show room floor at a dealership in New Mexico

 

[Mike Harrington]

Well that's exactly what it is!! It's a 1989 k3500 cab and chassis Cheyenne with a 454 TBI,a 4 speed Muncie with 4:10 gears and IFS. Supposedly came off of a show room floor at a dealership in New Mexico