Help in identifying their purpose. - Pontiac GTO Forum
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post #1 of 4 (permalink) Old 06-26-2019, 07:29 AM Thread Starter
 
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Help in identifying their purpose.

Hello, have a 72 Lemans and trying to figure out what the plugs are for the are just hanging loose at the rear of the engine. 350 engine with air, any thoughts would be great.
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post #2 of 4 (permalink) Old 06-26-2019, 11:33 AM
 
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Looks like the large one is for the fan relay. The relay should be bolted to the firewall close to that.
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post #3 of 4 (permalink) Old 06-27-2019, 08:51 PM
 
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It looks like the other one could be for the TCS (transmission control switch). I have mine unplugged on purpose to just use the carb for manifold vacuum on tranny modulator.
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post #4 of 4 (permalink) Old 06-30-2019, 08:33 PM Thread Starter
 
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Thanks
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO General Discussion

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