black harness with orange and black behind radio

paradigm

Greasemonkey
Aug 28, 2024
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I got the car without a radio, and there are 4 harnesses floating behind the radio area:

Blue harness with the light blue, dark blue, yellow and brown wire for the rear speakers.
White harness with the light green, dark green, grey and tan the front speakers
Black harness with yellow, grey and black for the 12v, ground and illumination for the radio?

Black harness with the orange and black? Lighting for ash tray or something else?

Is there a harness for the antenna?


wiring 01.jpg
wiring 02.jpg
wiring 03.jpg
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Also what is this harness below the driver side dash with the purple and pink wire?
wiring 05.jpg


What would feed the cigarette lighter? I am hoping to replace this with a dual USB charger.
 
This is for the radio memory from the battery hot-orange wire & back lighting dimming when the dash lights are on-brown wire
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This is for the brake light/TCC switch to allow the clutch converter to lock/unlock by either the computer or vacuum switch for non CCC cars with a lock up transmission-pink & purple/black stripe wires
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The lighter is powered by the same circuit as the radio memory orange wire, "Circuit 40, Orange, Battery Feed, Fused". Might be a good idea to use something like this to feed the power for the USB outlet off the fuse box for easier trouble shooting with it if there's ever any power issues with it.
 
Alright I found two more mystery harnesses under the driver side dash near the center of the dash, do you guys know what they are?

Single white wire to harness feeding single dark brown wire. The other end of the brown wire goes into the grommet pictured below, and has a cut end.

And a white harness with a pink/black stripe, black/white stripe and dark brown wire.

harness01.jpg
harness01_.jpg



harness02.jpg
 
This is for the radio memory from the battery hot-orange wire & back lighting dimming when the dash lights are on-brown wire


This is for the brake light/TCC switch to allow the clutch converter to lock/unlock by either the computer or vacuum switch for non CCC cars with a lock up transmission-pink & purple/black stripe wires

The lighter is powered by the same circuit as the radio memory orange wire, "Circuit 40, Orange, Battery Feed, Fused". Might be a good idea to use something like this to feed the power for the USB outlet off the fuse box for easier trouble shooting with it if there's ever any power issues with it.

This helps me get closer to solving the mystery of behind two of my LS PCM wires:

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?
 
This helps me get closer to solving the mystery of behind two of my LS PCM wires:

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?
I'm no good for LS ECM wires but I can guide you with the car's wires like that white & brown set. That's for the factory tach wire. White would of came from the cluster connector for the circuit board, running to the connector with the brown wire, The gromet on it would of secured it in the firewall hole (wire would of been inserted from the engine side of the firewall). it would of had the tach filter attached on that part before going to the distributor cap. That three wire connector looks to be for the cruise control with the it being whet the turnsignal/cruise lever switch would plug into.

As with our cars having a mechanical set up in the column, the computer signal from the CCC terminals on the back up switch might be a spot to check. Wires are Circuit 434 Orange/Black-ECM to Neutral Park Switch & Circuit 450 Black/White-CLCC ECM Power Grid.
 

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