Need help wiring FITech 70004 to brake switch

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06-10-2022, 06:40 AM

battmann

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Car: 1984 TA (1 stock / 1 custom)

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Need help wiring FITech 70004 to brake switch

Working on the wiring connections for my FITech ECU and there’s a wire that needs to have 12v when the brake is NOT applied and zero voltage when the brake IS applied. I have the factory wiring diagrams for the brake switch but not sure which wire is the right one to connect to. Would I connect this wire to the purple wire that goes to the tranny?

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06-10-2023, 09:02 PM

battmann

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Car: 1984 TA (1 stock / 1 custom)

Engine: LG4 / turbo LQ4

Transmission: 700R4 / 4L80E

Axle/Gears: Stock / 4:11 Moser 9"

Re: Need help wiring FITech 70004 to brake switch

Just following up as I figured this out. My brake switch had two connectors on it. One controlled the brake lights and the other worked the torque converter clutch. I removed the purple wire to the tq clutch and connected this to the FITech yellow wire for the TCC brake. This provides the correct signal for the ECU. Score!

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vorteciroc (06-10-2023)

06-10-2023, 09:37 PM

vorteciroc

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Car: Resto-Mod 1987 IROC-Z Clone

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Re: Need help wiring FITech 70004 to brake switch

Yup!

That's the Brake Pedal Wire (TCC) that My Horn blown by Brake-Pedal Prank Harness uses to Honk the Horn!

Install 2 Jumper Connectors:
-One at the Brake-Pedal Switch (TCC).
-One at the Steering-Column Connector (for the Horn Wire).

And an "Aligator-Clip" to attach to anything Grounded.

With the Engine running (or Ignition-Switch "ON")...
The Horn BLOWS anytime the Brake-Pedal is pushed!!!