69bigblock

I had this hooked up before with my last motor and was wondering if I can hook it back up with the LS1 motor... The wiring was redone by speartech if that matters.. I looked but couldn't find any good info with a reworked harness...
autometer #5310 rpm activated module..

http://www.jegs.com/i/Auto-Meter/105/5310/10002/-1

69bigblock

I tried to use hook up the tach wire but no go.. anyone.. instruction are,
12 volt source
ground
tach terminal

If this system doesn't work please let me know..

33willys

iTrader: (1)

There should be a white wire coming from the ECU for the tach signal. Search pinouts for your year/ECU to fine where its located.

geoff17

What was the old motor? The ls motors need to have the tach setup in 4cyl mode. You also may need to add a 12v source to the tach signal to stregthen its signal to the tach and may have to play with different resistors to get it right.