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AMX A/C refurb and wiring sort |
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Amurica
AMC Fan Joined: Feb/05/2015 Location: United States Status: Offline Points: 13 |
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Posted: Aug/03/2015 at 12:15pm |
I am restoring the A/C system on a factoy air 69 AMX. It has the blower with the air cooling tube, and is the system with the weather eye dial, like this one The factory wiring is all still there, everything is connected under the dash, however the leads were all cut and taped off in the engine bay by the blower motor, so I'm playing detective, and as you guys know, there isn't much info out there on the web as far as wiring schematics. I have an Orange, Green, and White wire coming out of the AC harness similar to here, I was told I would just need the blower relay, have that, I don't have the resistor box. But that would only give you one speed, thinking I misread something there. I heard later cars used a relay for the high speed, which are the "later cars"? This is the only clear image of wiring I could find on a complete system with a resistor, haven't seen any that integrated a relay into the circuit with the resistor, only pics of the relay on the firewall. Still trying to figure out this control panel too. I traced this lighter gauge brown wire with a bullet connector from the R-stat to the engine bay, pretty sure this is the trigger for the AC compressor? I'm not seeing any wires coming into the system to power the circuit though, so cant test yet. I've found the 2nd to top lever and bottom lever have the switches behind them. On the face of the controls those have 3 vertical tick marks, do those correlate to fan speeds? Both of these switches have jumper wires connecting them, and then 3 wires leaving to the engine bay by the blower, which I believe is the green, orange, and white for the blower resistor out there? Again, having a hard time figuring out what send powers to what as there is no juice going into the system. All fuse positions have fuses in them with continuity, I physically haven't been able to trace any wires going INTO the ac circuit, it all seems localized. Also, I'm not seeing any open spades on the ac controls where one would power the circuit. Any insight into the electrical workings of the A/C circuit would be greatly appreciated!
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rocklandrambler
AMC Addicted Joined: Feb/09/2013 Location: Nanuet, NY Status: Offline Points: 3953 |
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It is highly suggested that you purchase a factory TSM for your car and most of your questions will be answered. It is a purchase you'll never regret as it will save you so much time, money and frustration in the future.
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Past AMC's
1974 Hornet X (new) 1975 Gremlin X (new) 1964 Classic 660 Cross Country 1965 American 440-H |
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billd
Moderator Group Forum Administrator Joined: Jun/27/2007 Location: Iowa Status: Offline Points: 30894 |
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There's no relay in your car. That's only later cars.
The resistor is simply bypassed for high. All speeds run through the resistor and it's simply bypassed via the dash switch for high. In this picture, two wires are low and medium, and the white goes directly to white from the switch. It's straight through inside the resistor (I've taken a few apart to restore and replate the shield and contacts on them) So you can stop looking for the elusive relay and relay wiring |
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mmaher94087
AMC Addicted Joined: Apr/01/2008 Location: Arizona Status: Offline Points: 1690 |
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"I traced this lighter gauge brown wire with a bullet connector from the R-stat to the engine bay, pretty sure this is the trigger for the AC compressor?" Brown runs to the A/C clutch on the compressor.
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Mike
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george w
Supporter of TheAMCForum Joined: Jan/27/2013 Location: New Jersey Status: Offline Points: 2899 |
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Correct
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Long time AMC fan. Ambassador 343, AMX 390, Hornet 360, Spirit 304 and Javelin 390. All but javelin bought new.
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billd
Moderator Group Forum Administrator Joined: Jun/27/2007 Location: Iowa Status: Offline Points: 30894 |
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Blue and blue w/trace into AC stat then brown out to compressor. This makes sure the AC switch is on and the blower is on before the compressor will run.
So if there's no power to the compressor, check that there's something going to the stat in each case.
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Amurica
AMC Fan Joined: Feb/05/2015 Location: United States Status: Offline Points: 13 |
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awesome, thanks fellas! totally confirmed what I was thinking. good stuff.
I got an aftermarket under hood AC kit that just showed up. working on getting everything fit nice and clean. still not seeing any power coming into the control circuit, checked those blue wires too, which is weird. All fuses are in and good. So will def have to do some digging there. I still haven't found a stinkin blower resistor/cage. think thats the only part i need to get this thing together. Any tips on a good spot to pick those up? Edited by Amurica - Aug/13/2015 at 8:48pm |
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White70JavelinSST
Supporter of TheAMCForum Joined: Aug/08/2012 Location: Minnesota Status: Offline Points: 4867 |
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Amurica,
I've looked for the resistor many different times myself as I would like to have a functional spare, but so far no luck in finding an exact one. Ebay has a bunch of ones that might be adaptable, I haven't played with that yet. I suggest posting in the parts wanted section on this forum as a start. I'll keep searching too and let you know if I find a source. Here's another discussion on this subject blower resisterr Can anyone confirm for me that the 68/69 Weather Eye A/C control bracket has four mounting tabs same as the 70 version which I believe is photographed in the first post here? Or did I buy one with a missing tab? I have one with three mounting tabs that was advertised as a 69 part. It's just spare parts so not critical, but it would be nice to know what I got. Armand Edited by White70JavelinSST - Aug/14/2015 at 8:46am |
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70 Javelin SST, second owner, purchased 1972
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Amurica
AMC Fan Joined: Feb/05/2015 Location: United States Status: Offline Points: 13 |
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thanks for the input.
and i had seen that other thread as well. I did just find one on ebay, for 75 bucks, in rough looking shape, with no guarantee of working condition. probably junk if he has that disclaimer on there. such a pain. I'm about to just wire it up direct current and only have high speed, or maybe just buy two small in line resistors to associate in the circuit instead. Wouldn't be that difficult.
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CamJam
Moderator Group Joined: Jan/04/2014 Location: Arizona Status: Offline Points: 6553 |
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That's one nice looking control unit in the first photo. I wish mine looked that nice!
Very timely thread BTW, as guess what I'm doing today? First order of business was going to be to figure out where the white wire went! Bill, those cable wraps around the harness in your photo (just below the blower motor) are those a factory clamp? They look different than the ones I'm used to seeing.
Edited by CamJam - Aug/15/2015 at 10:08am |
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'73 Javelin 360 (current project)
'72 Baja Bronze Javelin SST '69 Big Bad Orange AMX (2018 Teague Heritage Award) SOLD |
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