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Discussion Starter #1 (Edited)
When brake pedal switch is pressed hatchback brake bulbs fail to light. Otherwise the position bulbs light when position light button is Turner on. I´ ve tested the brake wiring, and there's voltage on cold side of pedal brake and handbrake.
 

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Fix the melted connector on the L/R light.
There are many posts on how to 'improve taillight ground.'
 

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Discussion Starter #6 (Edited)
Ok, thanks Jim. When tested with screwdriver electrical tester, the pedal brake´s hot wire bright light, unlike the handbrake's white wire that fade light. The handbrake white wire's voltage could also be low from a poor ground?
 

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Handbrake is NOT connected to brake light.
Fix rear light ground and stop overthinking.
 

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Discussion Starter #8
So handbrake white wire is just connected to the dashboard parking light? Has the white wire 12V, or lower volts?
 

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There is nothing on the wire... the switch takes the circuit to ground when the handbrake is on, turning the light in the dash on.
 

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Discussion Starter #10
I'm confused. There must be a potential difference. Which voltage should indicate the voltmeter :
on pedal red hot wire?
on handbrake white wire?
 

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The hand brake is not related to the foot brake electrically.


The hand brake has a single switch which completes a circuit for the dash light. Positive comes from the ignition switch, ground comes from the chassis. The switch on the handbrake completes the ground.


The foot brake switch completes a circuit for the rear lights. Positive comes from the battery, ground from the chassis. The switch on the pedal completes the positive.
 
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