Author Topic: 79 T/A wiring connectors  (Read 1297 times)

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Offline boatnt

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79 T/A wiring connectors
« on: February 09, 2014, 07:46:09 PM »
hey guys,,I am putting together a 79 t/a 10th anniversary 400 4 speed,
have some plugs under dash that I am hoping someone could tell me what they are for

Offline boatnt

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Re: 79 T/A wiring connectors
« Reply #1 on: February 09, 2014, 07:50:15 PM »
I believe this is the rear defog relay,,,am I just missing ground and ignition voltage to the 2 open terminals?

Offline boatnt

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Re: 79 T/A wiring connectors
« Reply #2 on: February 09, 2014, 07:53:14 PM »
car does not have cruise control,,was ordered like that from the factory,,not sure if one of those connectors are for cruise.

thanks

Offline boatnt

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Re: 79 T/A wiring connectors
« Reply #3 on: February 18, 2014, 02:11:25 PM »
nobody?

Offline pancho400cid

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Re: 79 T/A wiring connectors
« Reply #4 on: February 18, 2014, 06:44:05 PM »
I don't want to cofuse the issue by guessing, and my wiring harnes is balled up in a storage unit so I can't look at it - sorry I can just give you the info....

Not sure where you are at on your car and maybe it seems expensive but wiring diagrams from theis site are well worth the money IMO.

http://classiccarwiring.com/1979-pontiac-firebird-color-wiring-diagram-all-models/

Not to mention the service manual available on this site.
1978 Trans Am - Brown - Current Project
1978 Trans Am - Silver - Future Uncertain

Offline pancho400cid

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Re: 79 T/A wiring connectors
« Reply #5 on: February 18, 2014, 06:57:42 PM »
Oh... and I forgot.... maybe this will help?

http://www.firebirdtransamparts.com/techinfo/harness/harness.htm
1978 Trans Am - Brown - Current Project
1978 Trans Am - Silver - Future Uncertain

Offline Angelo

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Re: 79 T/A wiring connectors
« Reply #6 on: February 23, 2014, 09:00:03 PM »
When you match the color wires to the colors noted in the manual you can figure out which harness is for what. Takes a lot of time though. Definitely recommend getting a copy of the service manual.
81' (78 clone), House of Kolor Jet Set Black, Pontiac 400 built by DCI Motorsports, FiTech EFI, Tremec 6 speed, 3.73 rear, YearOne 17" snowflake, Pro Touring F-body GT shocks/springs, hydroboost, factory 4 disc, Ram Air Resto + Thrust transverse exhaust.

Offline boatnt

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Re: 79 T/A wiring connectors
« Reply #7 on: March 01, 2014, 11:15:34 AM »
ok got it,,one if for the safety belt buzzer and the other is for the ignition key buzzer