NOS three pronged TCS sender unit #6490384
I have a 72 and im getting it back to factory under the hood, but had a lot of the wiring cut off when i bought it. i have the 3 prong sender unit but noticed you have only 2 being used? 1 from the TCS (blue wire) and 2 yellow, is this right? does the bottom middle not get used..Also do you or anyone know where they come from. Looking at the wiring diagrams and other 72's ive seen it 1 seems to come from loom and 1 goes to idle solenoid? although GM book doesn't show them as 2 yellow wires..Thanks,
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1972 Formula 400 auto.Lucerne Blue/Ivory Int.R Console. Numbers matching. Now Sold. 
Last edited by 72formula400; 04-29-2010 at 06:12 PM.
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