No Power
No Power I'm trying to hook up a 5" monster tach to my 99 Camaro ls1. The light is coming on and I can adjust the shift set ****, but the tach itself is not registering any rpm at idle or when I hit the gas. I followed the wiring instructions but they were general and autometer was no help when it comes to the ls1. If anyone has hooked one up successfully please tell me which wire you used to connect to the green wire that is supposed to go to the coil. I hooked it to the large pink wire (I assumed an electronic ignition wire) under the steering column upon some advice of another ls1 guy on this site (my mistake). Apparently that was the wrong wire but luckily everything seems fine, it's just not working. Any help or advice would be greatly appreciated.
TECH Senior Member
Joined: Dec 2001
Posts: 5,399
Likes: 3
From: Jacksonville, FL
Never installed one but think you need to connect it to the tach signal wire off the PCM. www.ls2.com/boggs/torques/99pinpcm.htm
I'm trying to hook up a 5" monster tach to my 99 Camaro ls1. The light is coming on and I can adjust the shift set ****, but the tach itself is not registering any rpm at idle or when I hit the gas. I followed the wiring instructions but they were general and autometer was no help when it comes to the ls1. If anyone has hooked one up successfully please tell me which wire you used to connect to the green wire that is supposed to go to the coil. I hooked it to the large pink wire (I assumed an electronic ignition wire) under the steering column upon some advice of another ls1 guy on this site (my mistake). Apparently that was the wrong wire but luckily everything seems fine, it's just not working. Any help or advice would be greatly appreciated.
you will have to hook it to the Tach signal wire out of the PCM
it is a pink wire but I am not sure which connecter it came out of
the odd thing is it (the Tach) will need to be set up like a 4 cylinder in stead of a 8 cylinder
not sure why this is but with my E-Boost ll boost controler it was reading double the tach till I swiched this in the E-Boost from 8 cyl to 4 cyl
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Launching!
Joined: Jan 2007
Posts: 242
Likes: 0
From: STL
Never installed one but think you need to connect it to the tach signal wire off the PCM. www.ls2.com/boggs/torques/99pinpcm.htm
