Coil ground?
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Coil ground?
I'm trying to install a tach in my truck (see sig), and it says for distributor equipped vehicles, to hook the green wire to the negative (ground side) of the coil. Where is it? and if someone has a picture, that would be great cause even with my test light i wasn't havin any luck.
Posting Guru
Joined: Aug 2007
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From: Belle Mead NJ
if you unplug the coil its labled + and - on the inside, but it is the left wire if your looking at the coil from the front of the truck.
You see where the tap is installed thats the neg side as thats my tach wire.
You see where the tap is installed thats the neg side as thats my tach wire.
Der Postmeister
Joined: Sep 2006
Posts: 6,859
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From: Long Beach, Calimexiforia
Check the wiring diagram for your dash. Tach wiring is ialready included in one of the 2 harness connectors that plug into the dash. Or I went to psalvage yard andand pulled rhe display out of a truck that had a tach & trip odometer plugs in and needs no new wiring. Have to use same type speedo type cable or electronic also get oil sender as its matched to the gauge $35 bucks for both.Also it can be out of multi trucks & years. I took mineout of a 91 lariat for my 87'f-150 but any 87' &-91' ranger or bronco also fair game.
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but wont the mileage also be off then?
F350xl,
couple questions:
Is that red clip just out of your coil for a tach?
What is the msd coil you have? I have thought about upgrading my coil and am looking at my options.
F350xl,
couple questions:
Is that red clip just out of your coil for a tach?
What is the msd coil you have? I have thought about upgrading my coil and am looking at my options.
Posting Guru
Joined: Aug 2007
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From: Belle Mead NJ
I have a MSD 6a box and got the coil with it, the red connector is a tap that taps into the wire, it has since been rewired but thats how it would go. I like the tach on the wheel better then the cluster, too much work for me.
Here is a pic of the tach
Here is a pic of the tach
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Lead Driver
Joined: Nov 2002
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From: Concord, NC
Personally, I hate those quick taps and recommend avoiding using them unless it is the only thing that will get you home after a break-down.
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Posting Guru
Joined: Aug 2007
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From: Belle Mead NJ
Yea I think it was the super tach 2, MSD was cake to install, 1 to +, 1 to -, 1 to + of factory coil wire, and 1 to neg of factory coil wire, then you have a pos and neg from the box to the coil.
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