How do I wire my 5" Autometer Tach to my LS1?
01-01-2008, 03:15 PM
#1
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How do I wire my 5" Autometer Tach to my LS1? Alright, Ive wired a tach to a LT1 which is pretty simple to the coil wires, but not sure if that works the same on the LS1, if anyone has a diagram or anything of how to connect a Autometer tach to the LS1 please let me know. Its a 98 LS1 and if you could provide which wires and colors I connect to, that would be great. I know red is for power for the light, green is for the tach signal, black is for the ground adn white is for switched power.
01-01-2008, 05:02 PM
#4
Check this out. --->
https://ls1tech.com/forums/showpost....7&postcount=54
3 wire hookup. + , - , and Pin #35 right out of the (blue) connector on the PCM. It's a white wire that will be tapped and go to the tach signal on your tach/shift light.
01-01-2008, 05:12 PM
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Actually, he has a 1998, so he would hit Pin #35 which is a white wire. 97-98 LS1s had different pinouts then 99-02s.
Check this out. --->
https://ls1tech.com/forums/showpost....7&postcount=54
3 wire hookup. + , - , and Pin #35 right out of the (blue) connector on the PCM. It's a white wire that will be tapped and go to the tach signal on your tach/shift light.
Check this out. --->
https://ls1tech.com/forums/showpost....7&postcount=54
3 wire hookup. + , - , and Pin #35 right out of the (blue) connector on the PCM. It's a white wire that will be tapped and go to the tach signal on your tach/shift light.
my bad. 
