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Discussion Starter · #1 ·
Ok 67 with an underdash harness with A/C and tach.

I am about to purchase a gauge feed harness. I found the following configurations:
W/o tach (3 prong plug)
W/ tach (3 prong plug)
W/ a/c (4 prong plug)

Since my harness has both a/c and tach which one do I get?

As a side note I will not be using a/c
 
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