Like the title says. I've been tryingto figure this one out for a while. It used to be the regular symptoms of having a bad TNS relay. Taillights didn't work etc etc. I've changed the blown fuse and the bad TNS relay. Everything now works with the exception of the gauge cluster lights. Even the aftermarket gauges now work and the dimmer switch does what it's supposed to.

I went as far as swapping the whole gauge cluster with a spare I have. Still nothing. I rechecked the TNS relay and the taillight fuse and they both work.

Any ideas?