1994 NAS 90 with AC wire diagram - Defender Source
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  #1  
Old March 26th, 2012, 01:16 PM
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Bill Campbell
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1994 NAS 90 with AC wire diagram

Anyone know where I can get this? I need a fairly accurate wire diagram of the entire system. I have physically pulled my A/C and most of everything the A/C connected to as far as electrical goes, but there are 3 wires interwoven into a circuit that attaches to the heatbox and I want to cut those out so I can sell the loom with the A/C.

Thanks,

B
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  #2  
Old March 26th, 2012, 01:22 PM
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Joshua
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That's the Wynns version, right? If you search "AC wire diagram" this comes up from a few months ago with a diagram from Pendy.

http://www.defendersource.com/forum/...C+wire+diagram

------ Follow up post added March 26th, 2012 01:24 PM ------

And i think your 3 wires may be for the blower?
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I am talking purely from an aesthetics standpoint.
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Old March 26th, 2012, 01:25 PM
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Jason England
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sounds like mine ... which is diavia.

post photo of what you are talking about. Not sure a 94 diagram exists ... but you can sort of work it out from a 1993
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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Old March 26th, 2012, 01:29 PM
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Bill Campbell
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I hope it is a Wynn's! I don't know. I just know I want that thing out of there. Thanks for the look Horsey! I will check it out this weekend and report back!

------ Follow up post added March 26th, 2012 01:33 PM ------

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Originally Posted by leastonce View Post
sounds like mine ... which is diavia.

post photo of what you are talking about. Not sure a 94 diagram exists ... but you can sort of work it out from a 1993
Ya I should have snapped a picture when I was in there yesterday. On the heatbox in the engine bay I have a circuit box looking thing with two relays and two fuses sitting on top of those relays. The wiring from the compressor and intercooler all lead to that as does the wiring from inside the cabin. Everything else could be disconnected from the hardware it was powering but this is the only stuff that seems to be directly intertwined with the rest of the truck harness.

B
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Old March 27th, 2012, 12:54 PM
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Bill Campbell
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Well I actually wrote Diavia to see if they had anything on file. Highly unlikely they will come up with anything, but I figured why not.
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Old March 27th, 2012, 03:14 PM
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Mine has that box ... it has a couple of connections back into the harness near the fuse box on the inside of the truck ... those wire connect to the ECU. The other wires run forward to the drier, fan and thermostat ... the power feed is from the back of the alternator.
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #7  
Old March 27th, 2012, 03:54 PM
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Bill Campbell
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Quote:
Originally Posted by leastonce View Post
Mine has that box ... it has a couple of connections back into the harness near the fuse box on the inside of the truck ... those wire connect to the ECU. The other wires run forward to the drier, fan and thermostat ... the power feed is from the back of the alternator.

Exactly. So does that mean I can just clip the wires that come from the AC harness and leave the rest?

Or does is all of it AC related and I have to follow back to the ECU the wires coming from the box. AKA does the AC report to the ECU?

I know less about electricity than I do mechanical, which is to say suprisingly little for owning a rover.

B
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Old March 27th, 2012, 04:02 PM
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Don't clip them!!

The wires that go back from the black box to under the dash area have connectors that you can disconnect ... doing it properly will make the AC more valuable ... or at least easier for the purchaser to install ( which is the same ).

The wires that run forward need to be removed ... but that should be pretty easy ... just follow them and disconnect them ... taking a few photos of the routing and where they connect would again help the purchaser with the install.

For the loom to have any value it needs to be complete ... with everything ... connectors and all!

Just take your time and remove it gently!
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #9  
Old March 27th, 2012, 04:05 PM
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Bill Campbell
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So is that black box ONLY AC related? Can I remove everything involved with it? I can definitely follow them back and remove them if they are clipped in, i just didn't know if that box had any other function outside of the AC.

B
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  #10  
Old March 27th, 2012, 04:26 PM
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That black box is exclusively for the AC!
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Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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  #11  
Old March 27th, 2012, 04:32 PM
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Bill Campbell
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Gracias. That's all my chubby little fingers needed to know.
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