changing dash to add tach

[SCOTI]

Originally Posted by truckin 79

It really is not that much work to modify your existing dash cluster to add a tach and gas gauge. I added a tach to my 79 I got lucky and scored a used tach that had a gas gauge at the bottom of tach as I wanted to keep clock. I do not have the clock powered though. The tach is easy enough to cut a hole and run wires to tach signal, power and ground. The gas gauge I just routed jumper wires from original spot to back of gauge. I did not solder the wire to spring clips; I just used some nuts and bolts to secure the wires to clips. It is pretty easy to do, I love having a tach to watch.
This thread is the one I followed
https://67-72chevytrucks.com/vboard/....php?p=7803354

I did a similar swap for my 89 CC dually. OE large fuel gauge removed for a repro tach w/the 'year friendly' font & purchased a small gas gauge to occupy the OE clock position (clock didn't work & I didn't care to replace it).