So my gauge cluster doesn't light up, and my tachometer doesn't work at all....everything else lights up, and all the other gauges work...ie: speedometer, temp, fuel...

I've checked all the fuses, and all the relays...no luck...anyone with any ideas?

Here's my setup....97 Integra, OBD1 B18c1 with OBD1 b16a head, Jumper harness OBD2a to OBD1 P72....the engine wireharness is OBD2A...hopefully this is all clear, and someone can help me out.....thanks