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Wire Harness removal
#1
I am in the process of cleaning up my engine compartment, rust prevention and painting and have taken the engine wire harness loose and want to remove it completely so that I can hopefully send off to Midlife for refurbishing soon. From what I see, it goes through the firewall grommet, is there a disconnect located somewhere? If not, what are the recommendations to remove the harness? Are the engine, interior/dash and rear harnesses actually one harness or separate? Thanks and I appreciate any advice and assistance.

Tom
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#2
The big headlight harness plugs into the back of the fuse box. Loosen the bolt on the front of the fuse box, but it is captured so it won't come completely out. When it is free, you should be able to pull the fuse box away from the connector of the headlight harness (square green connector). Carefully push the two locking tabs holding the headlight harness connector into the metal frame, and push out from the metal frame. The headlight harness is removed by pushing the grommet into the passenger compartment, and the rest has to follow.

Down along the driver's side kick panel, you'll see two square connectors (one red, one white) that connect the rear tail-light to the underdash harness.

Don't forget: NOT to cut any wires while removing the harnesses!

Let me check your shorts!
http://midlifeharness.com

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#3
Thanks Midlife, I don't plan on cutting any wires. Thanks for the info on the harness removal.

Tom
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#4
Here are a couple pictures of what Midlife is talking about. +++ on not cutting wires, everything will come out with connectors in place.
It is easier to take the whole dash to work on the harness under the dash. Only couple bolts on top one on each side after the dash pad comes off. The two at the bottom each side where the L brackets are and there is a brace rod on the left side of the glove box. Then once the steering column is out of the way there is a bolt right over the steering column. Then you can remove the whole dash after unplugging any connections in the A pillars and some to heater that stay on the firewall.

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When a man is in the woods and talks and no women are there is he still wrong??
Tongue
David
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#5
runninpony 
+1 on midlife and on not cutting wires and no Spaghetti wires like the ones I sent to him  Big Grin

71-73 Mustangs never die, they just go faster!
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#6
+2 On the previous posts. As you can see in the pictures the harness runs thru a plastic tube behind the dash gauges which is hard to get to without partially disassembling the dash.

Also, you did not say what model or options you have. If you have a convertible and/or power windows, or the convenience group option (things like seatback release actuators, hood and trunk lights) you will have a second wire harness running from inside the driver's side kick panel thru the firewall and along the engine compartment firewall to the starter solenoid. Then you may want to pull this harness while you have it apart and send it to midlife as well.

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1973 H Code Convertible - Medium Copper Metallic - June 8, 1973, Built Ford Marketing Sales Vehicle
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[Image: satellite.png] Proud Space Junk Award Winner!












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#7
Thanks all, I appreciate the advice and assistance. Hopefully weather will be good this weekend and I will be able to do some work on it this weekend and see what all I have to remove to get this harness out. BTW it is a 73 Mach 1, Q Code, no engine installed at this time. Luckily, the only wires that I have seen cut is one that looks like it would go somewhere around the drivers seat. No clue yet what that was but will do some investigating.

Tom
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#8
(02-20-2019, 09:43 PM)vintageman Wrote: Thanks all, I appreciate the advice and assistance. Hopefully weather will be good this weekend and I will be able to do some work on it this weekend and see what all I have to remove to get this harness out. BTW it is a 73 Mach 1, Q Code, no engine installed at this time. Luckily, the only wires that I have seen cut is one that looks like it would go somewhere around the drivers seat. No clue yet what that was but will do some investigating.

Tom

What colors is the cUT wire? if I recall correctly there is purple wire that goes along the inner rocker to the seat belt retractor. There is another wire that goes to the optional seat back release.
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#9
I will take a look this weekend to find out the color of the wire that is cut near the driver's seat. More to follow.

Thanks for all the assistance on this.

Tom
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