Anyone know if there are different switches for different years? I was looking for a switch for my 86 and Oreilys website lists 1 (S333, $19.99) that fits 84-88 258 engines and (S4057, $53.99) that fits 80-83 258 engines.
Wow! Got mine from Autozone for $6.99, all the 3 prong switches are the same, they even used them on the 4.0's for a length of time.
The switches Marty is asking about are for the gauge option. Both are 1-wire "big-can" units. Wish I knew what was different (but I don't). Thread size?? Rheostat resistance?? Or???