Dash Clocks Help

[C2K]

Ok I've tried unplugging the clocks and no joy.

Took the kill switch out of the equation as it was misbehaving, double checked all my engine bay earths and improved a few of them but found nothing disconnected. I now have all the lights functioning, but still no signs of like from oil gauge, speedo, tacho and fuel gauge. Temp gauge moves with the ignition on but obviously as the car is cold it doesn't move very far.

Asked cjm_harris if he wouldn't mind loaning me his clocks as I can't work out what could be causing it.

Can't understand what would've fried them, they were working fine before engine change and now they won't play ball.

Edit: thinking out loud there are two things that are different to when I last saw them working. One, i've changed the engine and disturbed everything in the bay, two - i've changed the ecu to an unlocked one with the supercharger map on it. Wonder if the temp gauge has a direct feed but the rest go to ECU first... where's that map of the wiring..