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#1 |
Senior Member
Join Date: Jan 2001
Location: Virginia Beach, Va, USA
Posts: 1,677
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Old style tach
Got the in dash tach with a red or pink wire and a brown wire. I have a newer computer setup. Only one wire. I would think that I would hook the computer wire up to the red/pink wire and hook the brown one to ground. And in the painless wiring setup that I have there is only one wire also. Don't want to short the tach out. Any suggestions from those that have put the big truck tach in? Wootdog
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1969 Chevelle 1990 IROC Z Convertible 2002 Silverado LT |
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#2 |
Join Date: Dec 1999
Location: Eastern - Manitoba Canada, Winnipeg
Posts: 4,369
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Originally the tach was grounded by it being in the metal dash cluster.. the red went to fuse box for power and the brown went to the coil negative side. I'm not sure where you would hook up wires for a computer application.
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Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife. |
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#3 |
Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Like Rod mentioned, the red, (pink) wire is for power, (switched ignition), the brown wire is for a tach hookup. Not sure what you have but on the HEI's there is a terminal for the tach and the brown wire hooks to that.
Does your computerized ignition have a terminal marked "tach"? Jim |
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#4 |
Senior Member
Join Date: Jan 2001
Location: Virginia Beach, Va, USA
Posts: 1,677
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OK
So red for power and brown to the computer. I would have thought the red wire on the connector would have been attached to the foil run. Thanks guys, Wootdog
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1969 Chevelle 1990 IROC Z Convertible 2002 Silverado LT |
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#5 |
Registered User
Join Date: Aug 2002
Location: Muskogee, Oklahoma
Posts: 2,914
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Not sure what you mean by computer, but the brown wire HAS to go to the distributor.
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#6 |
Senior Member
Join Date: Jan 2001
Location: Virginia Beach, Va, USA
Posts: 1,677
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negative
This has a computer and the distributor connects to the computer. This is not like an hei. Wootdog
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1969 Chevelle 1990 IROC Z Convertible 2002 Silverado LT |
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#7 |
Grubbin'
Join Date: Aug 2002
Location: Chico, CA
Posts: 293
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Then your fu(ked dude.
![]() Naw, do you mean you have a distributorless vehicle or you have the modern style electronic box (Can't remember the word for that computer thingy either) controling your ignition, fuel, etc. If it is an electronically controled ignition you should still have a way to splice into the wire or have an extra terminal for the tach. Sounds like you need to have it professionally installed though.
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project rust attack 1969 Chevrolet LWB w/ 307. I got power steering now woohooooo!!!!!!! |
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#8 |
Senior Member
Join Date: Jan 2001
Location: Virginia Beach, Va, USA
Posts: 1,677
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tach wire
there is a tach wire that comes out of the computer. The distributor feeds the computer.
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1969 Chevelle 1990 IROC Z Convertible 2002 Silverado LT |
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