Temp Switch Question - too many switches/sensors!

[NC_John]

Well, since my weekend remove, repair and reinstall over last Thanksgiving has now entered month 5, I'm struggling a bit with details. I didn't document enough thinking it was going right back in.

My issue is I have three temp sensors/switches and only need two but don't know which two I need. I think one is for the idiot light, one is for the temp gauge and one was for the TCS system which I removed from the engine.

I have a sensor/switch port in each of the cylinder heads and *think* I recall having one on the stock intake manifold (since removed and replaced with an edelbrock).

See the attached three sensors (two already installed, I found the third one later and went "d'oh!"). Can anyone identify which one I can disregard (the TCS switch)?

Thanks! I'd rather sort this out now than later when I have the engine full of coolant.

[john]

The one in the rear of the pass. side head is for the TCS.

[NC_John]

Originally Posted by john

The one in the rear of the pass. side head is for the TCS.

OK, but am I right with the other two- one for the idiot light and one for the gauge?

Locations aside, I have to put one in each head, do you know which switch was the one for the TCS? I would imagine it trips at a much lower temp than the one for the idiot light. I suppose I could put them both in a pan of hot water and run an ohmmeter across to see which trips first but if someone knows that saves me some time in the kitchen!

Thanks.

[john]

The sender in the driver side looks right for temp ga. does your truck have a gauge and idiot light? Mine only has gauge. Most idiot light senders I've
seen have the spade connector like the last pic. Someone else might know for sure.

[NC_John]

Originally Posted by john

The sender in the driver side looks right for temp ga. does your truck have a gauge and idiot light? Mine only has gauge. Most idiot light senders I've
seen have the spade connector like the last pic. Someone else might know for sure.

Well, if not for the idiot light (which mine may or may not have since it has the gauge), then what would that other one be for? All three went into the cooling jackets.... I have to dig up the electrical drawings but they are piss poor for deciphering....

[NC_John]

Anybody?