How To Replace The Engine Wiring Harness In A Classic Mopar (1967 Dodge Coronet 500 Project Update)

How To Replace The Engine Wiring Harness In A Classic Mopar (1967 Dodge Coronet 500 Project Update)

Long maligned for their issues and peculiarities, classic Chrysler products’ electrical systems are not as bad as “normal people” might like to believe. But at 50+ years old, it’s not at all uncommon to see wiring with the consistency of cooked spaghetti that would gladly set your beloved muscle car on fire with little encouragement. The good news is, replacement wiring is readily available for most classic models – your Dodge Dart, Dodge Charger, Plymouth Duster, or even your D100 pickup can have fresh wiring under the hood for a few bucks spent and a few minutes’ work.

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@OlderNotNecesarilyWiser says:

Two paws up from Kattie and Dixie, "You got squirrels?" I've seen so many wires that are burnt crisp, to the point that they just break off. Your wiring videos will hopefully help cut back on that sort of thing, I appreciate your knowledge!

@barryrussell4106 says:

I worked on the electrical of a duster I’ve been avoiding for 11 years last Saturday, 2 1/2 hours of chasing mopar electrical monsters and she fired right up. Why is the mopar wiring so daunting a task. I use to work at an auto electric shop and had to fix every mopar that came in, like British Lucas wiring horrible.

@cbobmonster says:

Once again, another great video Jaime

@user-hi2ev7ug4l says:

Good content on the harness thank you.

@user-rc8dy2oh4c says:

Valve covers are reversed

@72dodge340 says:

Just in case he hasn't figured out yet how to remove the blue from the RWL tires, the key is brake cleaner. Took me awhile to figure that out.
Only reason I mention it, is it looks like someone may have started to try and gave up. Mine looked like that for awhile too, because that's exactly what happened!

@clembob8004 says:

I have an electrical mess for you. My 56 Dodge pickup has mostly the original 1956 wiring under the dash, with a few other wires added at some point in the past. Then, under the hood it's a combo of mid-60s Mopar (starter relay, ballast resister, etc) sort of spliced into the original wiring, and hacked and whacked and…yeah it's a mess. But, it works, so if it works don't fix it, right? Oh, and it doesn't even have a fuse box (not a "thing" in 1956?). And no firewall bulkhead connector, just the wire harness that goes through the original rubber grommet. It does at least have a fused link out of whatever mid-60s donor vehicle it came from (this was all this way when I bought it, so I plead innocent).

So here's my thought. I am thinking about getting a replacement harness like you got for this 67 Coronet, and then hopefully find a matching firewall connector and then try to do something under the dash that involves a fusebox, probably either just wire it myself or see if I can find a kit of some kind. I am able to do my own wiring fairly well, and this truck is very simple under the dash so maybe it's not a bad plan. My other option might be to pretend it's a street rod and go that route with a wiring kit designed for that. Anyway, what would you do if it was in your DDG?

@pcbullets8726 says:

Big block fun! Can't wait to see more in this one.

@spurgear4 says:

Your videos make me want to work on my 340 Swinger. being exhausted from working my old ass off makes me want to go to bed.

@idaholineman5788 says:

67 coronet content!!! Oh hells yes

@clutchkicker392ison5 says:

She's beautiful just as she is But the REAL question is does anyone kno where i can buy a 'Jamie'? Plz

@cowthedestroyer says:

Wiring? mopar? No way man thats solid that should atleast run you 10k longer then a gm lifter

@noberet says:

Very good. I have been professionally entertained!

@NathansMoparGarage says:

Could have saved all that wire and the connectors

@mexicanspec says:

HI Jaime, may I call you Jaime? Did you see the link I gave you last time that showed the Mexican Spec '67 Coronet with the Charger grille?

@briane.5656 says:

Oh, that power steering noise was soooo familiar. I had an '87 D150 with only 95K miles on it (318 w/ 727 auto), ran fantastic but the power steering pump made exactly that noise, replacement leaked like a sieve, replacement replacement worked so-so. Thanks for sharing!

@bigwrenchtech says:

Hahhahahah, I never laughed so hard in my life, There's RC cola EVERYWHERE!!!

@michaelnault5905 says:

Reminds me of Grandma's gold color Coronet. Great styling.

@moparedtn says:

Damn satisfying stuff, chucking rotten wiring into the trash…

@kellismith4329 says:

My 1970 Dart had a washer pump that was operated by a small pedal on the floor near the dimmer switch, (non electric) I believe it was just like a bellows, it worked well

@steveash9831 says:

Here is a Bad Ash original that I have been saving for just the right time. The right time is now! "And remember… If at first you don't succeed, lie, lie again!

@RandallSoong-pp7ih says:

Thanks you for another wiring video!

@nickjohnson4433 says:

I'm terrible at doing electrical work on classics but I also get a huge satisfaction of how big of a pile of unneeded wire and electrical tape I can cut out of a new project.

@kenjohnson3641 says:

Cool video thats a cool car

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