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[C2] Electrical Question

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Old Oct 25, 2017 | 09:25 PM
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Gentlemen,
i have a question on my ‘66’s wiring. Can anyone tell me what this is and what it should be connected to? It is screwed to the dash support and has a black pigtail with an odd copper strip at the end.
Also, I noticed this wire with no obvious partner. It looks purple to me. Any clues? Thanks for any help you can offer
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Old Oct 25, 2017 | 09:34 PM
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The first one is a capacitor that goes to the brake switch on the support. Not sure about the second one.
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Old Oct 25, 2017 | 09:37 PM
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I think it is the condenser that attaches to the brake light switch. Should have a wire on each end that attaches to each side of the switch. The thin metal strips bends over the switch tangs before the switch wire connectors are plugged on.

Tom
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Old Oct 25, 2017 | 10:17 PM
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The first one you don't need to connect. It just filters out the slight pop in the AM portion of the radio when brakes are applied.
As far as the second, the only purple wire I see is one that plugs on the ignition switch and goes through the bulkhead connector to the S terminal on the starter solenoid. On a powerglide car it also says "neutral switch connection".



Last edited by 65GGvert; Oct 25, 2017 at 10:24 PM.
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Old Oct 26, 2017 | 12:54 AM
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Thanks, guys. I thought it looked like a condenser but I didn’t see it on my wiring diagram. I also thought the purple wire was for a PG neutral safety switch (mine’s a 4-sp). Everything seems to work so perhaps I don’t need the purple wire. I will hook up the condenser, though. I knew folks on the forun would know.
- Jeff
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Old Oct 26, 2017 | 09:17 AM
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Originally Posted by JLSmith
Thanks, guys. I thought it looked like a condenser but I didn’t see it on my wiring diagram. I also thought the purple wire was for a PG neutral safety switch (mine’s a 4-sp). Everything seems to work so perhaps I don’t need the purple wire. I will hook up the condenser, though. I knew folks on the forun would know.
- Jeff
Be Careful hooking up the condenser, most of them if orginal may start to smoke or short out...years of corrosion...

That one does not need to be hooked up as stated, but left to look good....

Jack

Last edited by Jackfit; Oct 26, 2017 at 09:18 AM.
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Old Oct 26, 2017 | 07:20 PM
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Originally Posted by Jackfit
Be Careful hooking up the condenser, most of them if orginal may start to smoke or short out...years of corrosion...

That one does not need to be hooked up as stated, but left to look good....

Jack
Thanks, Jack. I'll watch for that.
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Old Oct 28, 2017 | 11:20 AM
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Originally Posted by JLSmith
Thanks, guys. I thought it looked like a condenser but I didn’t see it on my wiring diagram.
- Jeff
You don't see it on the wiring diagram because it's part of the RADIO option (U69), and the wiring diagram only includes the circuitry in the "base car" with no options. It IS, however, shown in the U69 section of the Assembly Manual, along with six or seven other noise suppression capacitors that were part of the radio option.
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Old Oct 28, 2017 | 11:36 AM
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Original capacitors leak around the wax outer coating after a 1/2 century and almost always fail "open". Chances of a short are remote but an ohmmeter can confirm they are ok to reconnect. Many just cut off the wire lead and epoxy it back to the housing and they are essentially disconnected but look original.
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Old Oct 30, 2017 | 07:40 PM
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Originally Posted by Frankie the Fink
Original capacitors leak around the wax outer coating after a 1/2 century and almost always fail "open". Chances of a short are remote but an ohmmeter can confirm they are ok to reconnect. Many just cut off the wire lead and epoxy it back to the housing and they are essentially disconnected but look original.
Thanks, Frankie. Since the brake lights are working and I don't really listen to the radio, I just wrapped some black electrical tape around the pigtail lead and left it be.
- Jeff
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Old Oct 30, 2017 | 08:59 PM
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The single wire in your 2nd picture, is it possible it is brown, not purple?
There are 2 single brown wires with that connector, one for the heater switch, and one for the radio capacitor.
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Old Oct 30, 2017 | 10:46 PM
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I don't know if you have a/c or not, I'll post this picture for your perusal. Note that there is a brown wire to the heater fan switch and a purple to the flasher mounted right there on the side panel where your picture is. The purple is in a two pin connector so, probably not it.

Last edited by 65GGvert; Oct 30, 2017 at 10:48 PM.
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