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Old 11-05-2015, 11:21 AM   #18
ray_mcavoy
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Join Date: Nov 2009
Location: Sherman, ME
Posts: 2,373
Re: Add Factory Tach or Not ?

Quote:
Originally Posted by Chaplain View Post
More pics of the tach connector. Can an older harness be used with a 79 or later?
Yes, if you were to change out the connector on the pink wire that plugs into the fuse box you could use the older harness in your 79. As hatzie said, you'll need to obtain a #12004892 Pack-Con connector to fit the IGN port on your 79's fuse box.

Also, I'm still not seeing the far end of the brown wire in your photos. If it's a 75+ harness, no changes to the connector on the brown wire will be necessary. But if it's a 73-74 harness with a fork/spade terminal on the end, that will have to be changed to work with HEI.

Quote:
Originally Posted by hatzie View Post
I've seen narrow window 76 tachs with just a seatbelt light in the tach...
Yeah, I've come across a couple of those and think I might still have one in my spare parts collection. I believe the large fuel gauge used in the non-tach 76 clusters had a similar narrow window with just a seatbelt light as well.
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