Join Date: Aug 2012
Location: Little Elm, Tx
Bronco Info: '83, 5.0/C6, very stock
I did the required amount of searching and found this thread... but my tach is actually running backward...
my truck is an '83 XLT, 5.0, 2bbl, c-6, only mod is an HEI distributor.
ignition off: the needle is at 0
as soon as I start the motor the tach needle jumps to 6000 then uses 6000 as the zero point... cold idle reads about 5000 (actual ~1000), warm idle about 5500 (actual ~500)...
the truck has some obvious wiring "fixes" so Im not surprised at finding an electrical issue... i looked through Steve83s page and did not see a wiring diagram for the 83.