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  •  » Back-up light wiring for a T5 Tranny

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    7/13/2018 10:12 PM  #1

    almcgee
    I FYI 24-7

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    From: Fairview, Texas
    Registered: 6/01/2013
    Posts: 781

    Back-up light wiring for a T5 Tranny

    Can anyone tell me where to connect the wiring for back-up lights to a T5 Tranny?  I have the T5 tranny switch and a connector with 2 wires.  I know one wire connects to the wires going to the back-up lights and one wire is for power.  Where is the best place to tap into power and what is the best routing and where is the best place to tap into the wiring going to the back-up lights?  Pictures or a diagram would be nice.

    Mustang Steve Bash in Gruene, Texas September29-30, 2023
     

    7/14/2018 12:27 AM  #2

    6sally6
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    From: Surfside Beach,SC
    Registered: 4/02/2013
    Posts: 6,458

    Re: Back-up light wiring for a T5 Tranny

    I went back up thru the shifter hole and tapped into a hot ALWAYS source......bad move
    Hook to the ignition switch....or another source that's only hot with key on

    Get busy Liv'in or get busy Die'n....Host of the 2020 Bash at the Beach/The only Bash that got cancelled  )8
     

    7/14/2018 2:24 AM  #3

    TKOPerformance
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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,068

    Re: Back-up light wiring for a T5 Tranny

    There may be year to year variances, but for my '67 there is a four pin (two male, two female) plug coming through the firewall above the LH valve cover.  That plug is for both the reverse lights and the neutral safety switch.  The two pins for the neutral safety switch just get bridged (or you could wire in a clutch interlock switch if you want).  The other two pins are for the reverse lights and get wired down to the two pins on the reverse lights switch on the LH side of the T5.  I bought a plug and play harness.  It worked fine, except that it was about 1' too long, so I cut out 1' of it and spliced the wires back together so I could route it cleanly. 

     

    7/14/2018 1:06 PM  #4

    Vicfonz
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    From: Southern California
    Registered: 3/21/2018
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    Re: Back-up light wiring for a T5 Tranny

    mine is an automatic....but as for the power I tapped into my ignition..basically just a round grommet then a small nut to bolt it down to the pin that sticks out of the back of the switch..look at my previous post there is a small discussion on it..im going to add a fuse inbetween the power that leads to the N/S..im guessing 15 amp is sufficient..

    "If Someone Did it on Youtube...So Can I...Well.....Unless its Heart Surgery,Thats Kinda Hard"
     

    7/15/2018 8:05 PM  #5

    jkordzi
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    From: Dallas, TX
    Registered: 12/28/2013
    Posts: 923

    Re: Back-up light wiring for a T5 Tranny

    I swapped a T5 into my 65 FB.  I used the stock T5 back-up light switch and bought an adapter harness.  Here's one from NPD:

    https://www.npdlink.com/product/extension-wire-back-up-light-attaches-t-5-switch/169760

    The above harness attaches to the stock Mustang harness (15525 in the pic below), so you will need that if you don't have it.  Here are some pics that show how the 65 backup light wiring harness is routed:


     

    Cheap, Fast, Good:  Pick Any Two
     

    7/15/2018 11:13 PM  #6

    almcgee
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    From: Fairview, Texas
    Registered: 6/01/2013
    Posts: 781

    Re: Back-up light wiring for a T5 Tranny

    jkordzi,

    Thank You.  The diagrams are what I needed.  I have a connector for the switch on the T5 tranny with 2 wire leads.  I will have to make the 15525 harness.  Where are you in Dallas?

    Mustang Steve Bash in Gruene, Texas September29-30, 2023
       •Thread Starter
     

    7/19/2018 7:37 PM  #7

    BobE
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    From: White Plains, NY
    Registered: 4/04/2013
    Posts: 2,183

    Re: Back-up light wiring for a T5 Tranny

    =12ptRon Frances sells a OEM Style back-up switch connector for the T-5: #PG-055 w/9" leads.
    This is instead of wiring that comes w/two single push-on connectors.
     

    65 Fastback, 351W, 5-speed, 4 wheel discs, 9" rear,  R&C Front End.
     

    7/19/2018 8:37 PM  #8

    Don
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    From: Coppell, Texas
    Registered: 4/02/2013
    Posts: 1,196

    Re: Back-up light wiring for a T5 Tranny

    BobE wrote:

    =12ptRon Frances sells a OEM Style back-up switch connector for the T-5: #PG-055 w/9" leads.
    This is instead of wiring that comes w/two single push-on connectors.
     

    I also found everything needed at CJ Pony under T5 conversion

    Last edited by Don (7/19/2018 8:38 PM)

     

    7/24/2018 3:17 AM  #9

    daily driver
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    Registered: 1/02/2018
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    Re: Back-up light wiring for a T5 Tranny

    The first Hotwire I found went to the dome light. Didn't even think to check that because everytime I checked the back up lights, my door was open. Then I said to a friend. I have toggle switched my backup lights and said check this out. He said they're not on! I open the door went and looked and they were on. I soon realized they only came on when I had my door open! So I found a always hot and I'm using a toggle switch. I like that because I can use my backup lights for other lighting effects.

     

    7/24/2018 7:42 PM  #10

    6sally6
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    From: Surfside Beach,SC
    Registered: 4/02/2013
    Posts: 6,458

    Re: Back-up light wiring for a T5 Tranny

    daily driver wrote:

    The first Hotwire I found went to the dome light. Didn't even think to check that because everytime I checked the back up lights, my door was open. Then I said to a friend. I have toggle switched my backup lights and said check this out. He said they're not on! I open the door went and looked and they were on. I soon realized they only came on when I had my door open! So I found a always hot and I'm using a toggle switch. I like that because I can use my backup lights for other lighting effects.

    Just don't forget and park it while in reverse!! Don't ask me how I know this!
    6sal6

    Get busy Liv'in or get busy Die'n....Host of the 2020 Bash at the Beach/The only Bash that got cancelled  )8
     

    7/25/2018 4:21 PM  #11

    MS
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    From: Canyon Lake, Texas
    Registered: 1/24/2013
    Posts: 11,717

    Re: Back-up light wiring for a T5 Tranny

    Hot wire in RUN ONLY makes more sense than to worry what gear you parked in.

    Money you enjoy wasting is NOT wasted money... unless your wife finds out.
     

    7/25/2018 4:26 PM  #12

    6sally6
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    From: Surfside Beach,SC
    Registered: 4/02/2013
    Posts: 6,458

    Re: Back-up light wiring for a T5 Tranny

    MS wrote:

    Hot wire in RUN ONLY makes more sense than to worry what gear you parked in.

    RIIIIIIIGHT!
    6s6
     

    Get busy Liv'in or get busy Die'n....Host of the 2020 Bash at the Beach/The only Bash that got cancelled  )8
     

    7/25/2018 8:13 PM  #13

    daily driver
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    Registered: 1/02/2018
    Posts: 125

    Re: Back-up light wiring for a T5 Tranny

    I'm a standard 3 speed now-a-days. So yeah, I can park in reverse or any gear on flat ground.;)

     

     

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