A little Confused
Intermediate
Joined: Nov 2008
Posts: 26
Likes: 0
[QUOTE=Peeps9823;1577670697]Okay everyone. I'm a tad confused. Below is a pic of an electrical unit on the passenger side of my 74 LS4. It is right above the dip stick. I've located what I believe to be is the temp sending unit on the drivers side. But this electric unit, which seems to be wired incorrectly is puzzling me. The wire runs back into some form of conduit and behind the distributor and under the wiper motor...can anyone offer any insight, as to what switch this is, what it does, and how to correctly wire it.
thanks,
Peeps
Not positive, but i believe it is the temperature switch for the TCS (Transmission Control Spark) circuit. My wiring diagram shows 3 dark green wires connected to the switch. Two of them are basically a jumper between two of the leads on the TCS temperature switch and the third is another dark green wire that goes to yet another temp switch which is connected to the TCS solenoid.
This link shows the temp switch wiring harness with the 3 green wires
http://corvette-parts.zip-corvette.c...ature%20Switch
and this link explains the tcs system
http://www.wiringharness.com/tcs.htm
And a better explanation and diagram
http://www.73spot.com/index_stats_fi...ission/tcs.htm
thanks,
Peeps
Not positive, but i believe it is the temperature switch for the TCS (Transmission Control Spark) circuit. My wiring diagram shows 3 dark green wires connected to the switch. Two of them are basically a jumper between two of the leads on the TCS temperature switch and the third is another dark green wire that goes to yet another temp switch which is connected to the TCS solenoid.
This link shows the temp switch wiring harness with the 3 green wires
http://corvette-parts.zip-corvette.c...ature%20Switch
and this link explains the tcs system
http://www.wiringharness.com/tcs.htm
And a better explanation and diagram
http://www.73spot.com/index_stats_fi...ission/tcs.htm
Last edited by RJ80; May 21, 2011 at 02:10 AM.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,116
From: Crossville TN
That is correct. The TCS switch has two electrical contacts: one for a low temp switch that 'makes' when a minimum operating temperature level is achieved, and one for a high temp switch that 'breaks' connection if the temperature gets too high. The oil temp sender on the driver's side has only one contact.
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