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Thread: M37 wiring options

  1. #11
    General MatthewH's Avatar
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    For your guys who have built your own harness, any idea how much wire it took to build one, with turn signals? I'm currently working on one with really crumbling harness, and figure between myself and a couple of freinds we could get one built in short order.

    Thanks
    '54 Dodge M37, 6.2/TH700R4/NP205,
    '93 Dodge W350 CTD Getrag 5 spd/205 4x4 Dually
    M116A2 with M887 service body

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    Colonel Mike_L's Avatar
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    Good question. I'll look around for my notes on the project. May take me a couple - few days to find them.
    Mike
    Marion, IN
    1954 M37 W/OW
    Indiana MVPA

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    Senior Chief/Moderator hndrsonj's Avatar
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    Try Brent Mullins for the Greek Harnesses, better hurry though!
    1951 Reo M48 Deuce Tractor
    1962 Dodge M37B1 w/w
    1951 Willys M38

  4. #14
    General 1943ht's Avatar
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    I used around 500 feet for the front and rear harnesses and the dash ... laid out the old harness on the shop floor and went from there.. I also included wire and connectors for turn signals in the harness even though my 53 did not have signals .. it may be a future project and for the little extra wire it was a no brainer .. its very satisfying to have everything work, blackout lights, brake and tail lights, headlights, dash components etc .. even installed a 24 volt license plate light and a new connector for my trailer .. make sure you use dielectric grease when you put it all together. Its a lifesaver!!
    Last edited by 1943ht; 02-20-2012 at 01:46.
    Mark Koloc (LTC USA Ret)
    HOR:1631 Bitter Creek Lane, Batavia OH 45103
    Cell: 1.715.821.9426

    1942 GPW
    1943 M16A2 MGMC
    1943 Scout Car
    1944 M10 Ammo Trailer
    1947 CJ2A
    1947 SPEN
    2 M37 Winch Models

  5. #15
    General MatthewH's Avatar
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    Quote Originally Posted by 1943ht View Post
    I used around 500 feet for the front and rear harnesses and the dash ... laid out the old harness on the shop floor and went from there.. I also included wire and connectors for turn signals in the harness even though my 53 did not have signals .. it may be a future project and for the little extra wire it was a no brainer .. its very satisfying to have everything work, blackout lights, brake and tail lights, headlights, dash components etc .. even installed a 24 volt license plate light and a new connector for my trailer .. make sure you use dielectric grease when you put it all together. Its a lifesaver!!
    Any idea on the number of douglas connecters you used for the new harnesss? Where did you get your new connecters and the trailer recepticle?
    '54 Dodge M37, 6.2/TH700R4/NP205,
    '93 Dodge W350 CTD Getrag 5 spd/205 4x4 Dually
    M116A2 with M887 service body

  6. #16
    General 1943ht's Avatar
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    Eric's Military and Industrial Surplus .. Use the wire diagram as a rough count on connectors and order an extra bag .. get a bag of Y connectors (2 wire to 1 Wire) as you will use them in both the front and rear harness .. That shows up as a double connector in the wire schematic.. Eric sells Parker connectors 10 to a bag .. if you use Hypalon wire make sure you order the connectors for 14 gauge wire which was the original gauge used on the M37.

    You can strip your Douglas Connectors and reuse the two part metal shells with Parker guts .. Douglas connectors are more expensive as they are sold by the piece.

    If you need any further assistance call me @ 763-257-6422
    Last edited by 1943ht; 02-20-2012 at 23:53.
    Mark Koloc (LTC USA Ret)
    HOR:1631 Bitter Creek Lane, Batavia OH 45103
    Cell: 1.715.821.9426

    1942 GPW
    1943 M16A2 MGMC
    1943 Scout Car
    1944 M10 Ammo Trailer
    1947 CJ2A
    1947 SPEN
    2 M37 Winch Models

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    M-37Bruce (03-30-2012)

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    Colonel GUNNY 155's Avatar
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    Not sure if you solved your wiring issue yet. I had Vintage Wiring build a harness for my frame off restoration. Beautiful work and worth the money. Also a perfect fit. It was on the upper end for cost but I figured with all the other work I had I needed to farm out some of the more time intense issues. The other guys are dead on though about eliminating this head ache as well as safety hazard. Good Luck.

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    Colonel rboltz's Avatar
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    Got a complete set of harnesses from Vintage Wiring also. I opted for all packard connectors since I am doing a total rebuild. Douglas guages, lights and senders are now scarce.
    SFC - HQ 129th Sig Co PAARNG
    1952 M-37 with AN/GRC-46C complete and operating.
    1968 M-101A1 with 3KW 28 volt generator.

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    Resurrection from the grave. I found that you can use Packard connectors on Douglas connectors. I had a Packard harness and Douglass gauges and senders. A Douglass shell will fit over the Packard connector like it was made to do it and twist lock into position!
    1962 DON DJ3A
    1953 M37
    1950 M38

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    M-37Bruce (05-16-2017), Storm 51 (05-16-2017)

  12. #20
    Private
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    Hello Tanner, did that Greek harness work for you? Do you still have the extra?

    Thanks
    Neil



    Quote Originally Posted by Tanner View Post
    I bought two of the Greek harnesses when they were available on that large public auction site - still in boxes, as I'm nowhere near the wiring stage yet. But harnesses looked good, and instructions were in the 'kit' - I understand that there are a few wires to trace out & correct the connections, but no biggie...

    If you aren't concerned with originality and opt to go to 12 volt, I'd contact Rebel Wire (Rebel Wire .:. Wire kits .:. Wiring Harness .:. Connectors and Accessories for Real Rods) - talk to Bob & consider getting an aftermarket 'street-rod' style harness - he builds a very high-quality harness with heavy-duty SXL grade wire, not the cheap stuff that other companies use. His 14-circuit harness is less than $200.00, is labeled every 6" for each circuit, and - YES - you'd have to figure out what wires would mate to your requirements, but it wouldn't be that difficult.

    If you try patching the original harness, you just end up creating a whole 'nuther mess - and use quality crimping tool on connections; skip soldering it.

    'Tanner'

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