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Old 06-08-2012, 11:02 PM   #1
fattyarbuckle
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can someone tell me what these switches are

Doing some work on the sons truck and these had wiring going to them but not connected to anything.

Can someone please identify?

71 C10 SWB, I6 3 on the tree....

Thanks





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Old 06-08-2012, 11:12 PM   #2
Lee H
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Re: can someone tell me what these switches are

Some sort of relay or breaker. Not stock, i don't think.
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Old 06-08-2012, 11:24 PM   #3
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Re: can someone tell me what these switches are

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Some sort of relay or breaker. Not stock, i don't think.
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Old 06-08-2012, 11:27 PM   #4
fattyarbuckle
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Re: can someone tell me what these switches are

I do think the one on right is a breaker and the one on the left is a relay....
glad it's not stock....wires were wrapped up with harness and almost looks stock, and been there a long time.
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Old 06-09-2012, 03:20 AM   #5
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Re: can someone tell me what these switches are

They are not stock. Could be for aftermarket horns, trailer brakes, a/c, etc...I don't think you will need them. Joseph
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Old 06-09-2012, 09:40 AM   #6
Richard H.
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Re: can someone tell me what these switches are

Mine and others here had them , some kind genius emission set up.
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Old 06-09-2012, 10:33 AM   #7
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Re: can someone tell me what these switches are

Those are part of the TCS (transmission controlled spark) system.
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Old 06-09-2012, 11:19 AM   #8
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Re: can someone tell me what these switches are

yes stock for 71-72's // clearly shown in service manual and in wiring diagram
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Old 06-09-2012, 11:24 AM   #9
med.bronze
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Re: can someone tell me what these switches are

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Those are part of the TCS (transmission controlled spark) system.
x2. 72's had them moved to the inside next to the horn relay.
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Old 06-09-2012, 11:36 AM   #10
GASoline71
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Re: can someone tell me what these switches are

I had them on my '72. I removed them when I took the spark knock BS off the truck.

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Old 06-10-2012, 12:01 AM   #11
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Re: can someone tell me what these switches are

heres mine on the 71 before and after
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