67-72 temp gauge question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

abilityonline · 09-03-2009, 12:34 PM

I replaced my 68 c50 radiator with a modern rad from a F350. My temp gauge never worked, however I noticed the wire just hanging with a clip on the end. It has to be to the temp gauge. Where does this clip on? On the wiring diagrams it shows it going to the rad cap. Is that correct?

SoCal71K20 · 09-03-2009, 12:57 PM

Goes to grounded temperture sending unit that is threaded into cylinder head or intake manifold or thermostat housing. Good luck.

Legolas894 · 09-03-2009, 09:39 PM

My goes to the temperature sender in the water outlet cover. That's not too typical though. Most temperature senders are on the manifold I hear. Are you sure it's for a gauge and not an idiot light? If you put it to ground, the TEMP light should go on.

abilityonline · 09-04-2009, 02:15 PM

Here is some pics. I'm positive the wire in the photo goes to the temp gauge because by grounding it it moves the gauge. I'm also sure of where it attaches. The bolt on the upper block next to the upper hose. My question is the end of the wire looks like it should plug into something.

Yes I need to clean it off.

Here is where the ground post is

How does this wire secure to the post? Should it plug into something or should I crimp another end with a ring style end that fits around the bolt?

fixit-p · 09-04-2009, 02:32 PM

It should go to a sending unit and not straight to ground look on the driver side head between the first two plugs should look somthing like this.

09-03-2009, 12:34 PM	#1
abilityonline Registered User Join Date: Feb 2009 Location: Salt Lake City, UT Posts: 57	67-72 temp gauge question I replaced my 68 c50 radiator with a modern rad from a F350. My temp gauge never worked, however I noticed the wire just hanging with a clip on the end. It has to be to the temp gauge. Where does this clip on? On the wiring diagrams it shows it going to the rad cap. Is that correct?

09-03-2009, 12:57 PM	#2
SoCal71K20 Registered User Join Date: Jan 2002 Location: Lemon Grove, California Posts: 152	Re: 67-72 temp gauge question Goes to grounded temperture sending unit that is threaded into cylinder head or intake manifold or thermostat housing. Good luck.

09-03-2009, 09:39 PM	#3
Legolas894 Chemist under the hood... Join Date: Apr 2009 Location: Fort Erie,ON, Canada Posts: 617	Re: 67-72 temp gauge question My goes to the temperature sender in the water outlet cover. That's not too typical though. Most temperature senders are on the manifold I hear. Are you sure it's for a gauge and not an idiot light? If you put it to ground, the TEMP light should go on. __________________ Current fleet: 2013 GMC Sierra, 5.3L, 4x4 1988 GMC Sierra, 305, Auto 1984 Jeep Grand Wagoneer, 360 V8 1997 VW Cabrio, 2.0L 2017 Toyota Rav4, 2.5L Stuff I wish I still had: 2013 Toyota Matrix [RIP] 1967 GMC 910 Fleetside, 283 V8 [1st Love-SOLD] 1987 Jeep Cherokee Laredo 4X4, 4.0 I-6 [SOLD} 1994 Chevrolet Caprice Classic, 5.7LV8 [SOLD] 1995 Chevrolet Astro AWD, 4.3L V6 (RIP) 1998 Chevrolet Suburban 4x4, 5.7L V8 [SOLD]

09-04-2009, 02:15 PM	#4
abilityonline Registered User Join Date: Feb 2009 Location: Salt Lake City, UT Posts: 57	Re: 67-72 temp gauge question Here is some pics. I'm positive the wire in the photo goes to the temp gauge because by grounding it it moves the gauge. I'm also sure of where it attaches. The bolt on the upper block next to the upper hose. My question is the end of the wire looks like it should plug into something. Yes I need to clean it off. Here is where the ground post is How does this wire secure to the post? Should it plug into something or should I crimp another end with a ring style end that fits around the bolt?



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.