1976 Non-Tach to Tach Cluster Swap

[76LongBox]

I know that this subject has been covered numerous times, but I think my case might be slightly different....maybe??

Looking at the wiring diagram from the Technical Pages for the 1976 models, it appears that the wiring harness for a non-tach cluster and a tach cluster are absolutely identical.  Here is a quick pic I snatched from the PDF.  Can someone take a look at this and confirm that I'm looking at it correctly?

If I am correct, and I have a tach cluster from a 1976, there should be no need to move any of the pins in the wiring harness...correct?

[Captkaos]

1976 to 1976 "should" be a direct swap, but you still need to verify the pins in the plug.

[76LongBox]

Thanks for the confirmation.  I had looked at the printed circuits and it appeared to be direct swap.

[sphinx]

What are your plans for the fuel gauge?  I'm assuming you are putting the tech in the location of the large fuel gauge next to the speedometer.  I have pondered several different ideas with my no gauge cluster, none of which I really like.

[76LongBox]

Sphinx...

I bought a factory cluster on eBay that was supposed to be (and appears to be) out of a 1976 truck, so it should direct swap.  On the factory tach cluster, the fuel gauge moves to the lower left of the cluster, where the brake indicator is.  The brake indicator moves to the bottom of the speedo in a little window.

[Captkaos]

Is the oil gauge mechanical and it has a Volt gauge?  This is the only setup a 76-77 had.  And I hope you got the ferrule for the oil hook up as it is proprietary.

[76LongBox]

Yes, on the mechanical oil pressure gauge and a volt gauge.  Existing line for the oil pressure gauge is still there and intact on my truck.  Everything I had was working...I just wanted a factory tach setup, so I picked up a 1976 Tach Cluster from eBay.  If I can get the tach working (see my other post), I should be good to go. 

Matter of fact, since I know my existing gauges were working, I plan to use my old volt, temp, & oil pressure gauges, as well as my speedo.  I just changed out the face plate on the speedo so that I could keep my mileage but get the window for the brake light.

I am only the 2nd owner of the truck - purchased new by one of my uncles in April 1976.  My uncle died back in 1988, and my aunt kept it until I bought it from her about 10 years ago.  It still had the original drive train in it until last year when a buddy of mine helped me put a new GM 350 crate engine and TCI TH350 transmission in it.  I still tried to keep it fairly "stock", but did go with Edelbrock for the intake and carb, and MSD on the distributor. 

I really appreciate all of the help I have received on this site...I wouldn't be where I am with the truck if it wasn't for the helpful people here!