Heat Temp Gauge Wiring Harness

[Lifted1]

Hello Group

I bought a 1983 c10 and its been sitting and neglected for some time. The heat temp gauge is pinned to the right. i examined the green wire from sensor as far back as i could behind the block and i dont see any melted or grounded areas. i can not see behind the block so??

Is there a fuse?

It seems like the main wiring harness comes back to the DS fender area of the firewall and enters behind the gauges??

If i peel the harness open i do see a nice green wire. Can i splice it there? Is there more than one green wire in the harness? Im just trying to confirm this is the correct wire to the temp switch on DS block.

I have changed the switch but that didnt help.

I changed the thermostat out as well to be sure. at least i know the water is circulating now.

The truck has power window locks and those arent working either. It seems the amp gauge to battery is non op too.

 

[1987 GMC Jimmy]

Hello Group

I bought a 1983 c10 and its been sitting and neglected for some time. The heat temp gauge is pinned to the right. i examined the green wire from sensor as far back as i could behind the block and i dont see any melted or grounded areas. i can not see behind the block so??

Is there a fuse?

It seems like the main wiring harness comes back to the DS fender area of the firewall and enters behind the gauges??

If i peel the harness open i do see a nice green wire. Can i splice it there? Is there more than one green wire in the harness? Im just trying to confirm this is the correct wire to the temp switch on DS block.

I have changed the switch but that didnt help.

I changed the thermostat out as well to be sure. at least i know the water is circulating now.

The truck has power window locks and those arent working either. It seems the amp gauge to battery is non op too.

I think @chengny could give you the answers you're looking for on all these questions.

 

[HotRodPC]

Hello Group

I bought a 1983 c10 and its been sitting and neglected for some time. The heat temp gauge is pinned to the right. i examined the green wire from sensor as far back as i could behind the block and i dont see any melted or grounded areas. i can not see behind the block so??

Is there a fuse?

It seems like the main wiring harness comes back to the DS fender area of the firewall and enters behind the gauges??

If i peel the harness open i do see a nice green wire. Can i splice it there? Is there more than one green wire in the harness? Im just trying to confirm this is the correct wire to the temp switch on DS block.

I have changed the switch but that didnt help.

I changed the thermostat out as well to be sure. at least i know the water is circulating now.

The truck has power window locks and those arent working either. It seems the amp gauge to battery is non op too.

You're not Dave on Storage Wars are you? The guy who shows up in Yup Trucks?


Are you sure you're using the right Guage sender for the Temp light? Disconnect the wire at the sender and see if any difference is made.

As far as power windown and locks not working, I'd check the 25amp circuit breaker first, yes a circuit breaker, not a fuse. Next, I'd make sure the grounds on the driver side kick panel just up under the dash are all clean and well grounded. Not just the wires, but the junction ground block to the kick panel just up and inside behind the dash panel.

I'm thinking 83 is a Volt Meter not an Amp Gauge. Is it an Amp or Volt Gauge. That might be telling us it's been swapped out before and that could also be why the Temp Gauge does not work.

 

[Lifted1]

You're not Dave on Storage Wars are you? The guy who shows up in Yup Trucks?


Are you sure you're using the right Guage sender for the Temp light? Disconnect the wire at the sender and see if any difference is made.

i think so. Its a switch and the part number said it was for a guage, not a dummy light. It has a spade end on it though. i kept the original with nail head. I dont think the sender is the problem. I think its something else. The guage is always to the right. unless i plug it in upside down and then the gauge moves back to the other side. which makes me think the gauge is working?? im thinking of cutting a green wire within the harness where it exits in a large bundle of wires on left DS of firewall. waiting for confirmation.

As far as power windown and locks not working, I'd check the 25amp circuit breaker first, yes a circuit breaker, not a fuse. Next, I'd make sure the grounds on the driver side kick panel just up under the dash are all clean and well grounded. Not just the wires, but the junction ground block to the kick panel just up and inside behind the dash panel.

Will do these tonight. thank you

I'm thinking 83 is a Volt Meter not an Amp Gauge. Is it an Amp or Volt Gauge. That might be telling us it's been swapped out before and that could also be why the Temp Gauge does not work.

Its the stock gauge and i'm a *******. yes its the battery volt meter.

 

[Oldrider]

My oem temp gage pegged several years ago.
I ordered a replacement through lmc trucks and the replacement has worked fine for several years.
I sometimes have an issue with the wire terminal falling off of the nail head on the sender but I just stick it back on.