1968 Parking Brake Light Wire Help - Team Camaro Tech
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post #1 of 6 (permalink) Old Mar 15th, 15, 04:10 PM Thread Starter
Rob
 
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1968 Parking Brake Light Wire Help

Hi all, I need some help. I am trying to figure out where I can splice into the tan parking brake light wire. I have tried from the switch on the parking brake assembly but do not have any power whether I suppress the switch or not. I grabbed another switch, same result. The tan wire goes behind the fuse block, but I cannot find it from there. Do I need to pull the fuse block? I am trying to splice in a wire from the parking brake wire straight into a dakota gauge fuse box. Can anyone help me on this one? I appreciate it.
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post #2 of 6 (permalink) Old Mar 15th, 15, 05:00 PM
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Re: 1968 Parking Brake Light Wire Help

The warning light is a shared resource with the power brake system. Both have the ability to light the light. I believe both sides do so by grounding the tan wire but I may be wrong on that for 68.


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post #3 of 6 (permalink) Old Mar 15th, 15, 05:04 PM
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Re: 1968 Parking Brake Light Wire Help

Yes- the tan wire is the GROUND side of the circuit no power or positive. When the switch is engage or the balance bar in the proportion valve is active you will have continuity to ground on that wire. Light always has power to it waitng for a ground to complete the circuit.

You will need a relay if your trying to feed 12VDC to something from this wire.

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post #4 of 6 (permalink) Old Mar 15th, 15, 05:18 PM Thread Starter
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Re: 1968 Parking Brake Light Wire Help

Thank you. My car doesn't have power brakes. So do you know where they connect to the light? With the change out of gauges and I have been running them into the Dakota control box and it lights on the new gauges. I cannot figure out where tan wire runs, or where is connects brake light would be running out of the fuse panel.
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post #5 of 6 (permalink) Old Mar 15th, 15, 06:40 PM
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Re: 1968 Parking Brake Light Wire Help

BRAKE light is with the GAUGES fuse and power goes to gas gauge, temp light, oil, and GEN lights - inst cluster without gauges.

Tan wire is hot until the parking brake or brake distribution block is moved.
Each switch at each unit places a ground on the wire and BRAKE light is lit.

Yes, tan wire at parking brake switch should have accessory power when IGN switch is in ACC or ON.
This schematic might help
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post #6 of 6 (permalink) Old Mar 15th, 15, 06:44 PM
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Re: 1968 Parking Brake Light Wire Help

Whether power or manual brakes has nothing to do with it. The distribution block under your master cyl has a switch in it - when the pressure between front and rear brakes is unequal, the switch closes, illuminating the BRAKE light on your dash. The tan wire from that switch is connected to the tan wire from your park brake pedal switch at the bulkhead connector behind the fuse box. (It might look like it goes into the fuse panel, but it doesn't -it goes behind it. ) From there it runs to one side of the BRAKE warning bulb on your dash. The tan wire(s) are on the ground side of the circuit as said. The other side of that bulb is fed by "key-on" 12 volts.

"do you know where they connect to the light?
" - on a 69, the tan wire goes to the bulb socket. No clue on a 68 - they use that goofy circuit board.


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