Tach problem
Thread Starter
Advanced
Joined: Feb 2009
Posts: 64
Likes: 0
From: medford n.y
Tach problem
My 78 has had a lot of engine work through the years that I don't know what color is the tach wire. I have a light brown loose wire left. It has a complete MSD system in it and the tach just goes up slow and stops. I installed an auto meter 5 in tach with a MSD adaptor and it works fine but I'd also like the factory one to work too.
Thread Starter
Advanced
Joined: Feb 2009
Posts: 64
Likes: 0
From: medford n.y
No filter. I tried to hook up the light brown wire to the MSD adapter but it didn't work. This car has been through 4 engines and 3 different ignition systems so I don't have a clue as to where to connect the wire.
Melting Slicks
Joined: Aug 2012
Posts: 3,487
Likes: 83
From: Titusville Florida
on mine that brown wire goes to a filter then to the negative side of the coil, mine's a 76 if that makes a difference but don't think it does... I have been told if you don't have a filter, or one that works, then your tach will not work.
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