Quote:
Originally Posted by 502ss
Looking in the Haynes 1967-85 workshop manual. They show the white wire going to:
81-85 years
6 cyl - A.I.R diverter module
8 cyl - speed switch relay
The 77 up years don't have a white wire but instead a brown and that wire is shown to go to the tach clusters
I would disconnect the existing white wire and connect your tach lead there!
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he thanks man!
what is the speed switch relay for? what does it control? or check?