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Thread: TKX Wiring for Coyote

  1. #1
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    Question TKX Wiring for Coyote

    Would anyone have a schematic or advice on connecting the clutch safety sensor and the reverse brake lights on the Tremec TKX? Connecting the speedo was easy because the Ron Francis rear harness already had the plug. In the pedal box, I already connect the clutch safety wires to the cylinder plunger switch, per instructions. But I can't find any instructions or wiring diagrams that talk about the clutch safety switch at the transmission itself. Same for reverse brake lights.

    Thanks,

    32J

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    The clutch safety switch interrupts the starter and doesn't go to or through the transmission. For the backup light, there is a plug on the trans. You can buy the pigtails/plug connector from various sources.

    https://www.cjponyparts.com/modern-d...xoCFswQAvD_BwE

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    Question

    Quote Originally Posted by Papa View Post
    The clutch safety switch interrupts the starter and doesn't go to or through the transmission. For the backup light, there is a plug on the trans. You can buy the pigtails/plug connector from various sources.

    https://www.cjponyparts.com/modern-d...xoCFswQAvD_BwE
    For the clutch safety connector on the trans, would you suggest that I just terminate the wires or tape it off (or shunt the wires if it's a normally open switch)?

    Thanks!

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    Are you talking about the neutral safety switch? I just left that plug on the harness and zip tied it to keep it out of the way.

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  6. #5
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    Just to make sure it's clear, the Coyote control pack harness comes with a clutch safety switch. Doesn't involve the Ron Francis blue start wire or the transmission. Just wire it like the Ford and FF instructions show. Tie the blue RF wire intended for the safety switch out of the way or remove. Doesn't matter if the two ends (where the switch would normally go) are tied together or not. They're not in the circuit when the Coyote switch is used.
    Build 1: Mk3 Roadster #5125. Sold 11/08/2014. Build 2: Mk4 Roadster #7750. Sold 04/10/2017. Build 3: Mk4 Roadster 20th Anniversary #8674. Sold 09/07/2020. Build Thread and Video. Build 4: Gen 3 Type 65 Coupe #59. Gen 3 Coyote. Legal 03/04/2020. Build Thread. Build 5: 35 Hot Rod Truck #138. Build Thread. Sold 11/9/2023. Build 6: Mk5 Roadster 30th Anniversary #11,258. Build Thread.

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  8. #6
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    Quote Originally Posted by edwardb View Post
    Just to make sure it's clear, the Coyote control pack harness comes with a clutch safety switch. Doesn't involve the Ron Francis blue start wire or the transmission. Just wire it like the Ford and FF instructions show. Tie the blue RF wire intended for the safety switch out of the way or remove. Doesn't matter if the two ends (where the switch would normally go) are tied together or not. They're not in the circuit when the Coyote switch is used.
    Thanks, Paul. I didn't realize that. Sorry for giving bad info.

    Dave

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    Quote Originally Posted by 32J View Post
    Would anyone have a schematic or advice on connecting the clutch safety sensor and the reverse brake lights on the Tremec TKX? Connecting the speedo was easy because the Ron Francis rear harness already had the plug. In the pedal box, I already connect the clutch safety wires to the cylinder plunger switch, per instructions. But I can't find any instructions or wiring diagrams that talk about the clutch safety switch at the transmission itself. Same for reverse brake lights.

    Thanks,

    32J
    I am pretty sure the reverse light is just a normally open switch, right? (I didn't use it)
    You just run your lead though it and when its not in reverse the contact isn't made and no current passes through then when you are in reverse it competes the circuit.
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    Gen1 Coyote w/ Comp Cams & Cobrajet manifold. Tremec TKO 600 w/ a midshift kit. 2015 IRS w/ 3.73 Torsen diff. FFR Headers, Gas N Pipes, Power steering & power brakes.

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  11. #8
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    Thanks, everyone!

    32J

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