trap4x4
New Member
I'd like to add a tach to my 94 diesel auto ... Is a factory instrument cluster with a tach a plug n play with a tach delete cluster? Is there a provision in the harness for a tach cluster?
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factory tach
- Thread starter trap4x4
- Start date
Not sure Ive ever seen one w/o a tach. Got a picture?
I bet if its not prewired it would be easy enough to add the tach.
I bet if its not prewired it would be easy enough to add the tach.
trap4x4
New Member
Not mine but exactly the same....
Looking to got to this but with "auto" indicator
Looking to got to this but with "auto" indicator
DieselSlug
Well-Known Member
Would think it would be plug and play. IIRC only one or two large ribbon strip style connectors back there,,
Brooklyn Tow
9 11 Never Forget
The "NO Tach" cluster looks like a gasser unit.....I have a 89 3500 with a 454 in the yard and thats what the cluster looks like, no Tach.
DieselSlug
Well-Known Member
If you look close the no tach model has the "diesel fuel only" logo. Ive seen them in a few diesel truck in the junkyard, mostly cheyenne series trucks.
Brooklyn Tow
9 11 Never Forget
I guess a Tach was an option.....:???:
I do like that it has oil psi though.
- Staff
- #9
The bottom picture with the tach looks identical to mine in my truck.
Turbine Doc
Just Another Diesel Guy
before going through the trouble of installing the tach, see if your harness from alternator is carrying the tach signal wire, the dash mounted tach gets it's feed from the alternator.
trap4x4
New Member
That would more than likely be a green wire?
trap4x4
New Member
Doesnt look like its factory wired for a tach .... :nonod:
- Staff
- #13
You have the same as my set up on my alternator.
- Staff
- #14
According to my book, not my truck.
We should have three wires on the alternator.
Blue(my truck is red) = to the battery
White = Tach
Brown(mine looks black) = charge indicator
The brown and white are on the connector. The blue should connect to the stud.
Hope this helps.
We should have three wires on the alternator.
Blue(my truck is red) = to the battery
White = Tach
Brown(mine looks black) = charge indicator
The brown and white are on the connector. The blue should connect to the stud.
Hope this helps.
trap4x4
New Member
Update ... Just scored a '94 gmc diesel cluster with a tach from the pick n pull , and it is a direct plug and play ..... me likey when things work out like that....
- Staff
- #16
Nice score!