Brake Signal / TCC Ground, and Park Neutral Signal into PCM.

paradigm

Apprentice
Aug 28, 2024
50
17
8
42
My PSI harness has two wires not connected from the LS PCM to the '86 Monte Carlo that I have a 5.3 LS in:

ORANGE - Brake Signal / TCC Ground (NOT NEUTRAL SAFETY* Lets your LS PCM know you are in Park and/or Neutral so it can use appropriate Timing tables, and crank relearn can be performed) - they say this should go to the car's Ground (In Park and Neutral) - do you know where I should tie this into?
PURPLE - Park Neutral Signal into PCM (into LS PCM so it knows when brakes are applied, to control Torque Converter Lockup and Cruise Control.) - they say this should go to To 12V (Brakes Not Applied) on the car?

Where would you tie in the two above wires onto the '86 Monte Carlo? The car has a 700R4 mechanical transmission.

Thanks
 

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