help

[sr20detmike]

does any one which wire that tell each coil pack to fire on sr20det 13 redtop thanks it be a big help i try to hook on a tach

[compactfean]

You cannot hook a tach to any of the coil wires...it will not work. What you need to make an aftermarket tach work on an sr20det is the autometer tach adapter 9117. There is a common power wire that branches off to each coil. You want to hook the tach adapter up to that wire BEFORE it turns into 4 seperate wires....other than that, just fallow the tach adapter instructions.

[sr20detmike]

I got a tach with a built in tach adapter thanks do u know what the color of that wire is

[compactfean]

I believe its blue/ red stripe on chassis side. The tach you have, what type of tach adapter is built in? There are many different tach adapters out there for many different tach signals.