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Wiring diagram

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Moneypit View Drop Down
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Joined: 13 Sep 2018
Location: Barnesville mn
Points: 44
Post Options Post Options   Thanks (0) Thanks(0)   Quote Moneypit Quote  Post ReplyReply Direct Link To This Post Topic: Wiring diagram
    Posted: 15 Jun 2019 at 4:21pm
Does anyone have a wiring diagram of just the a/c system on a 7040? Wires are mostly gone on mine
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LB0442 View Drop Down
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Joined: 27 Dec 2014
Location: Boise ID
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LB0442 Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jun 2019 at 9:49pm
Found this in the service manual.  Fairly simple system.  Power starts at the blower switch then to evaporator thermostat, then to compressor clutch.  The ground for the compressor clutch may still have the sub cool switch in it, all mine are straight to ground, I get rid of that.  Also the switch on the power side disappears, that's another thermal switch, plastic body by compressor.  I have seen a lot of wiring problems in those connectors by the firewall/dash area, lot of dirt in that area over 30-40 years.  The connectors under the cab floor are the next area of concern.



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Moneypit View Drop Down
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Joined: 13 Sep 2018
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Moneypit Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jun 2019 at 5:55am
Thanks got it working
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