Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Bone85K5, Feb 6, 2003.
will a 78ish tach fit in a 85?
YES IT WILL....I have a 1978 K20, and it is using the cluster out of a 1989 Suburban...(donor vehicle...)
I traced the wiring, the plug and the printed circuit...the wiring is identical...it is even the same weather you have a tach and the small fuel gage, or no tach and the big fuel gage...just plug it in
the tach is wired seperately...
There is a slight difference in the angle of the crystal covering the display, but it will fit...use a bezel from the later will work, just don't use one from a DIN radio...(it is squared off in the lower right hand area, below the radio, and will hang off the later dash
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