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06-17-2009, 10:37 PM
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#1 |
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Gripnrip
Join Date: Nov 2008
Location: richmond utah
Posts: 63
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tachometer mounting
Okay, here is a few pics of my pending projects. A 71 GMC 3/4 ton 4x4, a 67 chev 3/4 longbed stepside 292, 67 chev short step 230. The 71 is getting a tachometer installed and I need some help with the wiring. Hopefully the photos show the wire to the firewall cluster, this wire has two ends, one end has a female fitting and the other has a male fitting. This wiring is factory gm. The other end I am to understand connects to the distributor coil Positive side, which is the positive side. I have connected the distributor coil end of the wire to one side of the coil. The male end of the other end of the wire is attached to where I believe it should be. I am not getting any movement out of the tach. Any help?[IMG][IMG][IMG][IMG][IMG]
 [/IMG][/IMG][/IMG][/IMG][/IMG]
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06-17-2009, 10:38 PM
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#2 |
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Gripnrip
Join Date: Nov 2008
Location: richmond utah
Posts: 63
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Re: tachometer mounting
Apparently I don't know how to attach a pic. Any advice?
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06-17-2009, 10:56 PM
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#3 |
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Moderator
 
Join Date: May 2007
Location: Southern Cal
Posts: 20,116
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Re: tachometer mounting
The brown wire goes to the Neg side of the coil, not the positive. The pink wire goes to a 12v supply on the fuse panel. If you have factory ignition, the neg side should be the side closest to the front of the vehicle. Look closely, they are marked.
__________________
1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man RIP FleetsidePaul Last edited by leddzepp; 06-17-2009 at 10:59 PM. |
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06-18-2009, 01:18 PM
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#4 |
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Gripnrip
Join Date: Nov 2008
Location: richmond utah
Posts: 63
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Re: tachometer mounting
Photo download attempt #2.http://67-72chevytrucks.com/vboard/a...1&d=1245347252
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06-18-2009, 01:20 PM
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#5 |
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Gripnrip
Join Date: Nov 2008
Location: richmond utah
Posts: 63
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Re: tachometer mounting
The wire I am pointing to in the pic above shows the male lead, the female lead is plugged in.
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06-18-2009, 10:00 PM
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#6 |
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Gripnrip
Join Date: Nov 2008
Location: richmond utah
Posts: 63
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Re: tachometer mounting
Thanks ledzepp, the tach is working now but it seems to be reading way too high. The tach came out of a gmc 6500 farm truck, maybe that has something to do with it reading wrong.
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