Temperature sender wire routing
Team Owner
Joined: Sep 2006
Posts: 31,335
Likes: 4,449
From: Westminster Maryland
Hi R,
What year car?
In 71 the sender wire for the gauge is part of the forward lighting harness.
It leaves the harness near the wires for the alternator.
The wire is protected by a woven sheath.
The connector varied depending on the configuration of the sender.
Regards,
Alan
What year car?
In 71 the sender wire for the gauge is part of the forward lighting harness.
It leaves the harness near the wires for the alternator.
The wire is protected by a woven sheath.
The connector varied depending on the configuration of the sender.
Regards,
Alan
Last edited by Alan 71; Apr 8, 2017 at 04:12 PM.
Thread Starter
Pro
Joined: Nov 2003
Posts: 619
Likes: 21
From: League City Tx
Actually its not even for a C3. I was just wanting to use the driver's head port to put a sensor and was seeing what the factory might have done if the wire came from the back of the motor direction.
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,754
From: Charlotte NC
SO I guess you got it figured out??? The wire for the temp sending unit or 'whatever' is in the harness for the forward lights and alternator wiring and runs along the inner skirt and then goes over to the sender/sensor as Alans photos shows. And it also has a coated sleeve material to protect the wire from heat.
DUB
DUB
Thread Starter
Pro
Joined: Nov 2003
Posts: 619
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From: League City Tx
I haven't figured it out yet.
My car is a 66, but I am installing an EFI system and need to run another coolant sensor for the ECU. Since I have 68 heads on the car, I figured I would use the sender port in one of the heads. In fact, when I got the car some years ago, the temperature gauge was hooked up to a sender in the driver's side head, but for the life of me, I can't remember how the wire was run to it; along the top of the intake/head somehow or maybe underneath.
I was just wanting to mimick the C3s, but didn't know the temp wire can in from the side via the headlight wires. Is it that was for all C3s, or did any 68-70 run it differently?
My car is a 66, but I am installing an EFI system and need to run another coolant sensor for the ECU. Since I have 68 heads on the car, I figured I would use the sender port in one of the heads. In fact, when I got the car some years ago, the temperature gauge was hooked up to a sender in the driver's side head, but for the life of me, I can't remember how the wire was run to it; along the top of the intake/head somehow or maybe underneath.
I was just wanting to mimick the C3s, but didn't know the temp wire can in from the side via the headlight wires. Is it that was for all C3s, or did any 68-70 run it differently?
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,754
From: Charlotte NC
The temp sender wire ran the same from 1968 to 1982. On the mid years the wire can from the back of the engine and ran across the top of the valve covers where the left side is bolted and there are usually clips made into the valve cover that would hold the protected wire.
Post a photo of your intake if you care to do so.
If you are needing to install a sensor for the ECM...I do know that GM installed this sensor in the very front of the intake....where it is pointing towards the front of the car. It is installed in the water jacket of the intake where coolant feeds the thermostat and also fed the front of both cylinder heads.
DUB
Post a photo of your intake if you care to do so.
If you are needing to install a sensor for the ECM...I do know that GM installed this sensor in the very front of the intake....where it is pointing towards the front of the car. It is installed in the water jacket of the intake where coolant feeds the thermostat and also fed the front of both cylinder heads.
DUB
Thread Starter
Pro
Joined: Nov 2003
Posts: 619
Likes: 21
From: League City Tx
The temp sender wire ran the same from 1968 to 1982. On the mid years the wire can from the back of the engine and ran across the top of the valve covers where the left side is bolted and there are usually clips made into the valve cover that would hold the protected wire.
Post a photo of your intake if you care to do so.
If you are needing to install a sensor for the ECM...I do know that GM installed this sensor in the very front of the intake....where it is pointing towards the front of the car. It is installed in the water jacket of the intake where coolant feeds the thermostat and also fed the front of both cylinder heads.
DUB
Post a photo of your intake if you care to do so.
If you are needing to install a sensor for the ECM...I do know that GM installed this sensor in the very front of the intake....where it is pointing towards the front of the car. It is installed in the water jacket of the intake where coolant feeds the thermostat and also fed the front of both cylinder heads.
DUB
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Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,754
From: Charlotte NC
Thanks for posting a photo of what you have going on.
Here is a thought...just in case you do not want to use the cylinder head to install your temperature sender for your gauge.
Keeping your factory temperature sender where it is.
You can possibly replace the nipple fitting in the intake where your heater hose is attached and replace it with this one and modify if by drilling a hole on the side of the hex portions and silver solder in a fitting that would accept your new temperature sensor for your ECM. This fitting might allow you to directly thread your new sensor into it..but that is hard to say.
http://www.ecklerscorvette.com/corve...1963-1972.html
DUB
Here is a thought...just in case you do not want to use the cylinder head to install your temperature sender for your gauge.
Keeping your factory temperature sender where it is.
You can possibly replace the nipple fitting in the intake where your heater hose is attached and replace it with this one and modify if by drilling a hole on the side of the hex portions and silver solder in a fitting that would accept your new temperature sensor for your ECM. This fitting might allow you to directly thread your new sensor into it..but that is hard to say.
http://www.ecklerscorvette.com/corve...1963-1972.html
DUB
Last edited by DUB; Apr 10, 2017 at 07:15 PM.
Melting Slicks
Joined: Jul 2010
Posts: 3,176
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From: perth western australia
Safety Car
Joined: Jan 2008
Posts: 3,795
Likes: 436
From: Aarhus, Denmark
I have a friend that has a 71
He has a temp sensor in each head, the one in the driver side, is like mine 69 with 1 wire.
But in the pass. side, he also have one, but with 2 wires, what is that?
He has a temp sensor in each head, the one in the driver side, is like mine 69 with 1 wire.
But in the pass. side, he also have one, but with 2 wires, what is that?
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,754
From: Charlotte NC
DUB
Safety Car
Joined: Jan 2008
Posts: 3,795
Likes: 436
From: Aarhus, Denmark