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| Connector ID (Page 1/2) |
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joe29742
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DEC 14, 06:50 PM
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This connector is near center console area.
This one is near left side A pillar.
Thanks
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olejoedad
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DEC 15, 11:43 AM
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Year and engine would help...
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joe29742
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DEC 15, 03:50 PM
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Raydar
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DEC 17, 12:18 PM
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Unless I'm mistaken, the top one looks like the connection for the AUX (center stack) gauges.
It clips to the back edge of the radio/center stack housing.
There should be a pigtail plugged into the bottom of the AUX gauges. The other end should plug into that connector
The "A-pillar" stuff? Not a clue...[This message has been edited by Raydar (edited 12-17-2025).]
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Mickey_Moose
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DEC 17, 03:22 PM
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Do a google search and download the Fiero factory service manual.
It has pages that show the position of the electrical connections in relation to area of the car.
Your pictures really are not that clear where the connector actually is - when you say center console area, do you mean center of the console as in front to back or center of the car in the gauge area? A better picture of the area would help or see the service manual.
As Raydar said, the one "could" be for the rally gauges, the other I "suspect" maybe power mirrors - but as I said, a better picture will help.  [This message has been edited by Mickey_Moose (edited 12-17-2025).]
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CoolBlue87GT
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DEC 17, 08:06 PM
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I ran the photo's through Google AI, heres what it came up with.
In a 1988 Pontiac Fiero with the 2.8L V6, these two connectors are found in the center console area, usually behind the cigarette lighter or ashtray panel.
The white connector is the C203 bulkhead interface. It is the primary "handshake" between the engine's computer (ECM) harness and the interior dashboard harness.
Function: It passes vital electrical signals from the engine to your instrument cluster and interior switches.
Key Circuit Pins:
Pin B (Orange): Constant 12V power supply for the fuel pump relay.
Pin C (Brown/White): Controls the "Service Engine Soon" lamp on the dash.
Pin D (Lt Blue): Carries the A/C request signal from the HVAC controls to the engine.
Pin E (Tan): Provides the signal for the oil pressure gauge.
Pin F (Tan/Blk): Operates the upshift indicator light (manual transmission only).
Common Issues: If your fuel pump isn't priming or your gauges (oil, temp, SES light) are dead, this connector is the first place to check for loose pins or corrosion.
The black connector located behind the center console, often accessed near the driver's side footwell or lower A-pillar area. It interfaces the engine harness with the interior dashboard wiring.
Wire Function Breakdown (Fiero Factory Colors)
The specific colors you identified typically correspond to these functions in the driver-side interior harness:
Black: Generally used for chassis ground.
Red: Constant 12V battery power (unswitched).
White: Typically for interior dome lights (ground-side trigger) or the tachometer signal.
Tan: Often associated with the oil pressure gauge or warning lamp.
Orange: Constant 12V power for interior lights (fused) or dash illumination.[This message has been edited by CoolBlue87GT (edited 12-18-2025).]
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olejoedad
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DEC 18, 06:30 AM
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I'm pretty sure that AI really means Actually Ignorant.....
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David Hambleton
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DEC 18, 02:58 PM
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| quote | Originally posted by olejoedad:
I'm pretty sure that AI really means Actually Ignorant..... |
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How about Absent Intelligence?
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cartercarbaficionado
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DEC 18, 03:59 PM
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| quote | Originally posted by joe29742:
This connector is near center console area.
This one is near left side A pillar.
Thanks |
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show the front of the connectors.... then it should be super easy to see what they are
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joe29742
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DEC 19, 12:03 PM
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Here are some better ones
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