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'95 pontiac grand am 3.1L tachometerVentu 09-09-2005, 09:37 PM I really need help installing a tachometer in my car, like if there is a pictured diagram of this, i'm a computer nerd. not a car wiz Ridenour 09-10-2005, 06:28 PM Welcome to the forum. You will need to connect the signal wire for the tach to one of the white wires coming out of the 6-pin connector on the ICM. http://www.grandamgt.com/forum/attachment.php?attachmentid=3884 The Ignition Control Module is located below the coil packs. Ventu 09-29-2005, 02:28 PM in the plug with 6 pins. There is a missing wire next to a purple-white wire. we tryed to put the tach on that but it didn't work. Ridenour 09-29-2005, 04:16 PM I don't understand what you mean. Try plugging it into the slot labeled "121 WHT ==> TACH SIGNAL" It's just-above the dead center of the picture. Ventu 09-29-2005, 05:43 PM the picture isn't showing up for me Ridenour 09-29-2005, 07:19 PM Ventu 09-29-2005, 07:40 PM I found the wire i need, but it isn't just hanging there, it is with the rest in some type of jacket that goes to the PCM. Do i need to just put that wire out of the jacket, or out of the plug. or cut it vBulletin®, Copyright ©2009, Jelsoft Enterprises Ltd.
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