No gauges in 1989 K5

[Clark75K5]

As the title says I have no gauges, MOST of the cluster lights work however. (motor is an all-stock 350)

I have done some light troubleshooting and have found I do have 12 volts on the "gauges" fuse, however the 3 pink 12v supply wires in the 18-pin cluster harness have no power. I tried to follow the pink wires back but it is buried in harness wrap, but before I unwrap everything I thought I'd check here first if there is a known failure point for this.

One more side question, on a gauge dash where does the alt sensing wire usually go? It had a newer alternator plug in it when I got it and only had a wire going to the junction. I have an aftermarket alternator harness with a built in resistor and currently have it hooked up to one of the blank "ign" spots in the fuse. I bought a Pico fuse block tap but it doesn't fit. (anybody know a good source for one?)

 

[Clark75K5]

Next I am going to replace the fusible link down by the starter, I had power on both sides but it is very frayed and the insulation on one side is coming off, and the other side has about 1" of bare wire showing.

I read in another thread (perhaps not on this board) where someone had power to both sides but it wasn't fully functional, and this solved a similar problem.

 

[frankin5]

There should be a 20amp fuse in fuse panel for the cluster.