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Ok so i have aquired a tach and now i want to install. It has 4 wires green, white, black, and red. I know red is power and black is ground. What do the green and white wires do and where would i hook them up on a 3.1 mpfi?
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Green is probably for the light, and white is the signal wire. Connect that to the ICM (6-pin connector) as shown below:
-Brad-
89 Mustang : Future 60V6 Power
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so where can i find the icmComment
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The ICM is in the engine compartment and is the module that the coil packs sit on top of. So on a 91 Cutlass, it would be near the oil filter IIRC.-Brad-
89 Mustang : Future 60V6 Power
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Nope, Green is tach, white is light, congrats you almost blew up the tach.Comment
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i havent tried anything yetComment
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I'm sure reading the instructions would clarify the wire colors as well. But maybe that would make sense... And I haven't hooked up a tach in probably 15 years, so I was basically guessing (hence the "Green is probably").-Brad-
89 Mustang : Future 60V6 Power
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Follow the build -> http://www.3x00swap.com/index.php?page=mustang-blogComment
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well after finding the online manual for the tach i found a wiring diagram. I am seeing the black=ground red=12v white=dimmer green=signalComment
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Yup, the white C tach signal on the 6 pin connector.
I almost installed a tach in my car until I found a full gauge cluster for my car. Looks much nicer.sigpic
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Original L82 Longblock with LA1, LX9, LX5 parts
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Tach
What kind if tach will work on an '86 2.8 S10? And how would it hook up?'86 S10 Blazer 4WD, '87 2.8 with 3.1 crank and pistons, A.R.I. "Stage 2 Cam", Iron Heads with stiffer springs, Holley TBI, Manifold bored to fit the TBI Base(4.3 size), Fiero Covers, MSD Coil, DynoMax Muffler and 2.5 Tailpipe, no cat, Auburn Limited Slip, 3.73 final Drive. 700R. '85 Fiero GT 3.4 Hybrid, relieved top intake and exhaust, 57mm TB, Auto. 3.06 final drive.Comment
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Any tach will work, hook them up to the negative side of the coil.Originally posted by Ray Hamilton View PostComment
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Which side of the S10 divorced coil is the negative side? Two plug ins going to it.
Thanks'86 S10 Blazer 4WD, '87 2.8 with 3.1 crank and pistons, A.R.I. "Stage 2 Cam", Iron Heads with stiffer springs, Holley TBI, Manifold bored to fit the TBI Base(4.3 size), Fiero Covers, MSD Coil, DynoMax Muffler and 2.5 Tailpipe, no cat, Auburn Limited Slip, 3.73 final Drive. 700R. '85 Fiero GT 3.4 Hybrid, relieved top intake and exhaust, 57mm TB, Auto. 3.06 final drive.Comment
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The 2 plugs are really 1. The pink is power and the white is the signal or negative side. Either plug can be used they are effectivly spliced once plugged into the coil.1993 EXT. CAB, 3.4L V6 TBI, 5spd manual. Sonoma
1990 4Door, 3.2L V6 TBI, 5spd manual. 4X4. Trooper
Because... I am, CANADIANComment
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Thanks alot, again.'86 S10 Blazer 4WD, '87 2.8 with 3.1 crank and pistons, A.R.I. "Stage 2 Cam", Iron Heads with stiffer springs, Holley TBI, Manifold bored to fit the TBI Base(4.3 size), Fiero Covers, MSD Coil, DynoMax Muffler and 2.5 Tailpipe, no cat, Auburn Limited Slip, 3.73 final Drive. 700R. '85 Fiero GT 3.4 Hybrid, relieved top intake and exhaust, 57mm TB, Auto. 3.06 final drive.Comment
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