C20xe Nova - aftermarket rev counter issue

[Mucker_TD]

Just noticed my rev counter stopped working today, it's a gauge separate from the dash clocks so anyone know where I start to try to fix this problem?

(wiring/fuse issue)?

[pie]

have you checked the wire off the coil fella?

[Mucker_TD]

I haven't done anything as of yet, it's the early dizzy engine (unsure if that makes any difference?)