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Thread: 1967 M-715 Rewiring Advice needed

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  1. #1

    Default 1967 M-715 Rewiring Advice needed

    I am looking for advice here for rewiring. I have read various threads here and other places and have gained pros and cons. I have a 1967 M-715 that is in great shape but the wiring is suspect. I acquired an old fire department brush truck that was well cared for (mostly). I am leery of the spider web of spliced wires hear and there. They converted it to 12 volt when they blew the original engine and installed a 283 SBC. I am happy with it and will keep it. The question boils down to which way to go on rewiring: a Painless wiring rewire or modify an M series loom (m35A2 or M151)?

    I wish to use the 3 way switch again with the functionality of the blackout lights. There is a keyed ignition that I will also keep. Nice that it makes it more difficult for it to be stolen. Apparently the M151 wiring may be more appropriate since the alternator wiring is on the correct (driver’s) side. But actually having fused circuits with the painless would be a peace of mind too. Thanks for your thoughtful comments.
    Last edited by 44willysmb; November 4th, 2016 at 12:34 PM.

  2. #2

    Default

    I might add that the goal is to restore it to mostly military appearance and Functionality.

  3. #3

    Default

    Nice that it makes it more difficult for it to be stolen.
    Now-a-days a stock trucks is pretty hard to steal.
    24V can't be jumped easily.
    Few youths know how to shift a standard transmission.
    While the key can be hot-wired, the starter button on the floor goes mostly unnoticed.

    For all the trouble and aggravation in building a harness (time is money), Vintage wiring of Maine makes front/rear harness for the m715.

    I keep the floor starter button and put in a key operated battery cutoff switch.

  4. #4

    Default Agree

    Quote Originally Posted by kwai View Post
    Now-a-days a stock trucks is pretty hard to steal.
    24V can't be jumped easily.
    Few youths know how to shift a standard transmission.
    While the key can be hot-wired, the starter button on the floor goes mostly unnoticed.

    For all the trouble and aggravation in building a harness (time is money), Vintage wiring of Maine makes front/rear harness for the m715.

    I keep the floor starter button and put in a key operated battery cutoff switch.
    I agree with the above. If you use a harness from another "M" series truck you will spend countless hours making it conform. I have rewired two trucks and took the Vintage Wiring route. Its not cheap and will still take some thinking but lots easier then a kluged up system.
    SFC, HQ,129th Sig Co, PAARNG, Vietnam Era

  5. #5

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    I'm no electrical guru by any means. In fact I hate it. But a grand for wiring is kind of steep. But if you consider the time to do your own...well then maybe so.

  6. #6

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    Buying the tools, wire, harness tape, packard connectors and plugs isn't cheap either. You might be able to get by with only the front harness and repair the rear harness.

  7. #7
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    I installed a harness from Vintage wiring ........ awesome ..... too easy.

  8. #8

    Default

    Quote Originally Posted by teking View Post
    I installed a harness from Vintage wiring ........ awesome ..... too easy.
    Yep, expensive but it works!
    SFC, HQ,129th Sig Co, PAARNG, Vietnam Era

  9. #9

    Default

    It does. I am angling for a new project so all the money I can save here I can reinvest on the new baby!

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