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    Author Topic: 4-Speed wiring through Firewall for Reverse Light. 70 Challenger  (Read 10246 times)

    Offline 4 speed fish

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    Re: 4-Speed wiring through Firewall for Reverse Light. 70 Challenger
    « Reply #15 on: May 20, 2012 - 07:22:53 PM »
    Buy a 1 inch recessed plug from RT specialities and drill a small hole in it for the wire.
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    Offline GranCuda1970

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    • Rev 20:4. Mat 6:33 John 1:3 Mat 26:41
    Re: 4-Speed wiring through Firewall for Reverse Light. 70 Challenger
    « Reply #16 on: May 22, 2012 - 10:20:01 AM »
    Is this wire that goes through the firewall to the tranny sensor part of the underdash wiring harness or is it a separate harness?
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    Offline 4 speed fish

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    Re: 4-Speed wiring through Firewall for Reverse Light. 70 Challenger
    « Reply #17 on: May 22, 2012 - 10:53:14 AM »
    It is the wire off the reverse harness that connects to the dash reverse light,connect this wire to the reverse light wire after you stick the wire from the harness back thru the firewall hole.
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    Offline GranCuda1970

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    • Rev 20:4. Mat 6:33 John 1:3 Mat 26:41
    Re: 4-Speed wiring through Firewall for Reverse Light. 70 Challenger
    « Reply #18 on: May 22, 2012 - 01:35:31 PM »
    Thanks, then it is separate, I think I located a Co. that repops it.

    http://www.evanswiring.com/catalog.htm
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    Offline GranCuda1970

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    • Rev 20:4. Mat 6:33 John 1:3 Mat 26:41
    Re: 4-Speed wiring through Firewall for Reverse Light. 70 Challenger
    « Reply #19 on: May 22, 2012 - 01:41:09 PM »
    anyone bought from these guys before?
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    Offline GranCuda1970

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    • Rev 20:4. Mat 6:33 John 1:3 Mat 26:41
    Re: 4-Speed wiring through Firewall for Reverse Light. 70 Challenger
    « Reply #20 on: May 22, 2012 - 01:54:37 PM »
    Never mind classic industries sells this part.
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    Offline filmsurgeon

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    • Resto-Mod '70 Convertible Challenger
    Re: 4-Speed wiring through Firewall for Reverse Light. 70 Challenger
    « Reply #21 on: March 18, 2013 - 02:41:07 PM »
    Quote from: 7071 challenger on May 17, 2012 - 06:07:29 AM
      I found that one on my computer. If it can help...

    Can anyone tell me what the size of the hole should be for the "Reverse Light" grommet (located between the booster/master cylinder/brake assembly, and the upper-right bulkhead connector hole)?  Thanks.
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    1970 Challenger Convertible (JH27N0B); Resto-Mod; 605 HP, 412cid Small Block; Holley 750CFM Carburetor; A-833 23-spline 4-SPD; A-body 8.75 rear-end w/3.55 gears; 3" mini-tub; leaf spring relocation kit with split-leaf mono and Caltracs; American Racing AR500 Wheels, Rears = 15x10 (5.5" BS) with 315/60-15 BFG Comp T/A Drag Radials; Fronts = 15x7 (3.5" BS) with 215/70-15 BFG Radial T/A Radials.

    Offline Topcat

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    Re: 4-Speed wiring through Firewall for Reverse Light. 70 Challenger
    « Reply #22 on: March 18, 2013 - 10:51:56 PM »
    Before you drill the hole, buy the harness.
    Mega Parts sells them. P/N: 104-DRLW

    Then use a digital measuring instrument to check diameter of the grommet.

    I'm pretty sure I checked mine and it was 1".
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    Mike, Fremont, CA.

    Offline filmsurgeon

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    • Resto-Mod '70 Convertible Challenger
    Re: 4-Speed wiring through Firewall for Reverse Light. 70 Challenger
    « Reply #23 on: March 19, 2013 - 03:00:58 AM »
    Quote from: Topcat on March 18, 2013 - 10:51:56 PM
    Before you drill the hole, buy the harness.
    Mega Parts sells them. P/N: 104-DRLW

    Then use a digital measuring instrument to check diameter of the grommet.

    I'm pretty sure I checked mine and it was 1".

    Yes.  I bought the harness from Evans Wiring.  It has the grommet attached.  I figured I could measure with a digital caliper, as you suggested.  I thought maybe asking here would confirm the grommet size.  The diameter measurement I got is 0.750" (the part of the grommet that would mate with the hole).  So, I guess I'll drill a 3/4" hole.  Thanks for the feedback.
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    1970 Challenger Convertible (JH27N0B); Resto-Mod; 605 HP, 412cid Small Block; Holley 750CFM Carburetor; A-833 23-spline 4-SPD; A-body 8.75 rear-end w/3.55 gears; 3" mini-tub; leaf spring relocation kit with split-leaf mono and Caltracs; American Racing AR500 Wheels, Rears = 15x10 (5.5" BS) with 315/60-15 BFG Comp T/A Drag Radials; Fronts = 15x7 (3.5" BS) with 215/70-15 BFG Radial T/A Radials.

    Offline chaps70rt

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    • 70 Challenger R/T Hardtop in Progress (Canada)
    Re: 4-Speed wiring through Firewall for Reverse Light. 70 Challenger
    « Reply #24 on: July 31, 2013 - 10:13:15 PM »
    I bought the same harness from Evans Wiring.    Thanks for sending the diameter measurement read out.

    Getting done this weekend before the challenger goes for replacement disk brakes.   Getting close to being on the road.  I took it for a small spin down the street and back .... without windshields (front and back).    What a buzz .....

    Chaps
     
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    White 1970 Challenger R/T
    440 - 4BBL - Shaker
    Daily Driver - 2014 Dodge RAM 1500
    Stouffville, Ontario Canada

    Offline Topcat

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    Re: 4-Speed wiring through Firewall for Reverse Light. 70 Challenger
    « Reply #25 on: July 31, 2013 - 11:32:25 PM »
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    Mike, Fremont, CA.

    Offline Chryco Psycho

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    Re: 4-Speed wiring through Firewall for Reverse Light. 70 Challenger
    « Reply #26 on: August 01, 2013 - 06:33:35 AM »
    The best way to drill a clean hole in sheet metal is to use an electrician sheet metal hole punch , like this , it makes a perfect hole without distroting the metal http://www.amazon.com/Central-91201-Manual-Knockout-Punch/dp/B0012F8GCQ/ref=sr_1_5?s=hi&ie=UTF8&qid=1375353246&sr=1-5&keywords=sheet+metal+hole+punch
    « Last Edit: August 01, 2013 - 06:35:43 AM by Chryco Psycho »
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