ok so i know there are threads for the tach already but i been reading some and none of them tell me exactly what to do with my hookup. so ill say this again cuz im in desperite need to get it working. i have a autometer tach adaptor with a red wire,red/green wire,black,grey wire. i have a autoguage i had bought from a friend with an adjustable shift light attached. it does not have the settings to set it to a 2/4/6/8 cyl setting. i have the 2 red wires spliced into my coil packs to a pink wire and the black to a ground. i duno if its the right way to hook it up for my car or not cuz i get no signal at all. so if some one can tell me the exact wires i can splice my adaptor into that would be greatly appreciated since i cant find a sutable point of refrence to hook it up. i have a 96 2.2L 5speed cavalier.
pull the tach off the car, hook the hot and ground to a battery, and then tap the signal wire to the hot of the battery. if the needle jusmps, it works. if not, you've got a bad tach.
made a small diagram:
not sure of the placement of the red/white and the red/green, may have them mixed up, but thats the general idea.
you cut the hot wire for the coil pack (a red wire) in half, and they'll never touch again, except through the adapter.
JBO Stickers! Get yours today!
that helps a bit i tried the tach and it flickers when i touched it to the posative. i just cant seem to get a reading . i know the hot wire is pink i belive from the coil packs what i did was cut the wire in half and joined both ends of the wires to each side of the pink wire and have the ground hooked up. it dont seem to work at all unless theres a diffrent wire that im missing. like what i did was attach one end to the coil from the adaptor and the other wire to the hot wire that goes to the coil.?
ok so i just figured something out that i didnt know i could do lol. my tach works and so does my adaptor what i did was i spliced one of the red/green wires from my adaptor to the pink wire off my coil and the red wire from the adaptor to my battery and the grey to my tach it got a signal but only to 2000 rpm when i shut the car off it kept running until i took the ataptor wire off ther battery. plz help
mitchell guimond wrote:i know the hot wire is pink i belive from the coil packs what i did was cut the wire in half and joined both ends of the wires to each side of the pink wire and have the ground hooked up.
The only thing I can think of is to switch the ends. Mine didn't work until I did that
mitchell guimond wrote:ok so i just figured something out that i didnt know i could do lol. my tach works and so does my adaptor what i did was i spliced one of the red/green wires from my adaptor to the pink wire off my coil and the red wire from the adaptor to my battery and the grey to my tach it got a signal but only to 2000 rpm when i shut the car off it kept running until i took the ataptor wire off ther battery. plz help
i should have put in there that the other side of the adapter doesnt actually go to the keyed hot, it goes to the other side of the red wire you cut from the ignition module harness. so, after another couple minutes in paint...
your engine stayed running because since you hooked it directly to your battery, your ICM was still getting power.
JBO Stickers! Get yours today!
lol ok then it must be my tach that cant seem to get a reading for some reason. i had it right to begin with that i hokked both wires to the cut pink wire off the coil and grounded my adaptor and had it run to my tach. my tach did get a signal but wouldnt rev past 2000 rpm on my tach. so i think i mite need a new one to read it better. i have a profrom guage with red external shift light. maxes at 11,000 rpm so anyone know what guage they would recomend to get a signal to it cuz its been pissing me off for the past yr and no one seems to know what to do to make it work correctly.
My tach setup is for sale in the Classifieds...
