Well I finally got around to ordering a 4wd indicator light that goes in the top of my transfer case. I ordered the one from rockauto and the picture of the one i ordered appeared to look the same as the one I have. Well it came today and its a bit different.


the size and threads appear to be the same (but the threads are broke off this old spare indicator sensor that I compared it too, havent pulled the one I have in it now to compare it) but the plug is different. I was wondering if this would work if I just spliced my wires and found a new male plug that would go into this new sensor? It appears to be about the same and probably accomplishes the same purpose, just wonderin if they sent me the wrong sensor or if this is the one you get now and just have to make it work?

 

You need to find a GM connector to use it. If you can't find one from a GM pick up truck you can rummage around through the wrecking yards and look for a similar plug under the hood near the heater box of a late 70's to early 80's Monte Carlo. You will then need to cut a slot in the GM plug to index it into the switch connection. The switch you have has that little index tab hickey where it plugs in.

 

so it can be used? or people have used this before??? or is it still the wrong one? I figured I could make it work but didn't wanna ruin anything if it wasn't going to work for me.

 

The original sensors are $$$$

 

Guess I might be first to try this switch
Switch will not work it's normally open, original switch normally closed. Installed on truck and it works backward light on when not in 4wd light off when in 4wd

 

It screwed in OK though? I thought the tread pattern was different?

Well if it's a case of switching some wiring around...that might be doable. Jim, Mr. Martin...you're up on this one....

Thanks for letting us know.

 

you got the missing thread out, a 5 pole relay can adapt normally open or normally closed for light activation.

 

its the same switch(functionally) just with a GM connection(they used NP205's as well). it will work.

 

Screws in no problem
I think the threads are tight on purpose, you don't thread switch in all the way. Thread in enough to adjust detent.
If someone is smart enough to figure out the wiring to make it work that would be great

 

That's the same one I used in my truck. It came with the pigtail, all I had to do was splice the wires and connect the new pig tail. Little heat shrink to keep the water out.

 

I have no idea what a 5 pole relay has to do with this.

An ordinary mini-ISO relay, like the 3 on the left fender, has a NC contact that will work for inverting polarity. 12V to sensor to coil on relay. Common and NC contacts on the relay wired to original sensor wires.

 

I did the same on a truck I was flipping, worked great

 

did you get switch from rock auto ? The one I used is definitely backwards and did not come with pigtail . I wonder if they are different switches

 

No it was from my local napa

 

Just ordered switch from Napa , will be in tomorrow . Will check if it's nc or no when I go to pickup.
Hoping it's different than the one I have from rock auto . They look the same in the picture