68 Tach

68 327 4spd · Poncho Master!

68 Tach

68 327 4spd · Poncho Master!

Anybody with a 68 Beau with a factory tach wanna post a pic for me,thinking about adding one to my new moredoor that i just put one the road.

rabbit64cs · Canadian Poncho Superstar!

I have one not installed yet, doss that work for a pic or are wanting to see it installed.?

68 327 4spd · Poncho Master!

I would like to see it installed thanks, any idea if it's a simple install(wiring) or not.

jfkheat · Guru

Here is mine. This is the only picture I have now but can get a couple tomorrow if you need them. I have a spare tach here somewhere if you need pictures of it.

James

-- Edited by jfkheat on Saturday 24th of March 2012 06:02:51 PM

rabbit64cs · Canadian Poncho Superstar!

Should be a simple I install for 68 , it replaces the clock. No real extra wiring.

1968SD396 · Newbie

jfkheat wrote:
Here is mine. This is the only picture I have now but can get a couple tomorrow if you need them. I have a spare tach here somewhere if you need pictures of it.
James

-- Edited by jfkheat on Saturday 24th of March 2012 06:02:51 PM

Hi guys, kind of resurrecting an old post but I'm hoping one of you or James here can help.

My friend has an actual 68 SD 396 Beaumont but the previous owner did something with the wiring and the tachometer is no longer hooked up. Can someone show me a pic of the back of their tach showing which terminal is for what? All I see is one big terminal and three very small one. They may not even be terminals but I'm assuming there must be at least two wires to hook up, tach signal, power to the unit somehow???? Please help.

Also, he has an HEI distributor, is this a problem with these tachs?

Deluxe68 · Addicted!

Here are the instructions for the aftermarket unit not too sure if it pertains to your situation. If you are running an MSD box with the tach output you will probably need a tach adapter, either the MSD 8920 or possibly the 8910. I would look into it a bit more before you buy either one or the other though.

Dash Tach Installation Instructions
1970-72 BUICK "A" BODY TASH TACH

1964-72 PONTIAC "A" BODY DASH TACH

1969- 72 PONTIAC "G'~ BODY DASH TACH
1968-72 OLDSMOBILE "A" BODY DASH TACH
1963-64 CHEVY NOVA DASH TACH

Install your new tach in place of your clock or block off plate using
appropriate service manuals as necessary.

Remove the wiring harness from the plastic bag and install this harness to
the rear of the tach. The plastic connector is polarized to prevent improper
installation.

Plug the orange or red wire with the black plastic end connector (part of
above mentioned harness) into the fuse panel opening marked "ign", or
connect it to an ignition controlled wire under your car's dash.

The brown or gray wire with the metal ring terminal ( part of above
mentioned harness) passes through the firewall and connects to the negative
terminal of the coil, or the tach port of an HEI.

If your new tach is supplied with a lighting harness, use the included blue
plastic connector (from the bag that you removed the wiring harness) to
connect that tach light harness to your car's under dash harness. The wire
leading to the light on your radio or heater control light (both usually gray)
is a good place to make this connection. The black wire, which is part of the
light.harness, grounds the tach mechanism and the lamps, and is connected
to a good ground under the dash. Different years or applications, such as
Nova, require different grounding procedures.