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Topic: Another Unknown Connector. Any help?

in Forum: C3 Electrical


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Another Unknown Connector. Any help? (1/6)
 6/7/24 10:21pm
Webslinger22Lifetime Member
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Rochester, NY - USA

Vette(s):
1981 Silver/Blue


Joined: 8/22/2006
Posts: 21

Moving on to the shift console of my '81and I have one more terminal that doesn't have a mating connection. It's just forward of the front console bracket and secured to the tranny tunnel. There are 5 wires: Blue, Black/White, Brown, Purple/Black and white. I've been back and forth through my service manual and assembly manual. I see no reference to it. Can anyone help me out here?

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Re: Another Unknown Connector. Any help? (2/6)
 6/8/24 9:38pm
NorskyLifetime Member
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Burke, VT - USA

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Joined: 1/23/2002
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Power windows switch...???  🤔  Just a guess.



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Re: Another Unknown Connector. Any help? (3/6)
 6/9/24 9:57am
Adams' AppleLifetime Member
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Duncanville, TX - USA

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#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


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The purple wire in the connector usually indicates it is related to the starting circuit. Neutral safety, anti theft, etc. Purple is also used in HVAC systems, but not typically inside the cabin area. I have scrutinized the '81 wiring diagram, and see NO 5 wire connector inside the cabin that contains those wire colors. It is possible it is for some optional equipment(rear defog, etc) that perhaps your car does not have. 

 

btw..do you happen to know if this is a St. Louis built car, or Bowling Green?



|UPDATED|6/9/2024 6:57:20 AM (AZT)|/UPDATED|


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Re: Another Unknown Connector. Any help? (4/6)
 6/9/24 11:29am
JPD1stVetteGold Member
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Scotch Plains, NJ - USA

Vette(s):
1981 Corvette Coupe, Stock, Black on Black, 4 Spd


Joined: 1/11/2006
Posts: 237

For my 1981 St. Louis blt. car, this is the vehicle OBD1 diagnostic connection.



|UPDATED|6/9/2024 8:29:47 AM (AZT)|/UPDATED|


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Re: Another Unknown Connector. Any help? (5/6)
 6/9/24 2:46pm
JPD1stVetteGold Member
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Scotch Plains, NJ - USA

Vette(s):
1981 Corvette Coupe, Stock, Black on Black, 4 Spd


Joined: 1/11/2006
Posts: 237

See photo of the 81 wiring diagram of the Diagnostic Check connector.

Since this is early OBD1 a 5 pin led for checking codes is probably not available.

There maybe another 1 wire )tan/blk stripe wire connector floating in there as well. It is for the cars with an  automatic trans.

Hope you can read the lettering.

 



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Re: Another Unknown Connector. Any help? (6/6)
 6/9/24 5:22pm
Webslinger22Lifetime Member
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Rochester, NY - USA

Vette(s):
1981 Silver/Blue


Joined: 8/22/2006
Posts: 21

Thanks JPD. I did see a reference to a diagnostic check in the service manual and thought that this might be for that. 

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