88 ln65 4x4 gauges and meter lights stopped working
 

Hi first post on here, have just spent two hrs searching first but no direct answers!
Had my ute for 9 years now and never had and bother with electrics but all my gauges and warning light have stopped working, glow, oil, filter, tbelt, brake, don't come on I've got her in bits cleaned all grounds and looked for broken shorted wires, obvs checked bulbs and if I put live feed to temp or fuel sender connectors the gauges rise and putting voltage to connectors bulbs light so sure it's not the clocks! Disconnected multi plug under seat and the 3 pin plug for reverse 4x4 and to eliminate that but still nowt, getting batt voltage to live feed on pin 31 on clocks and indicators still work they on same fuse! Glow plugs and timers all work and relays clicking!! Pulled the dim-dip lamp relay and found a goosed relay in there and (new one ordered) but was messing about bridging terminals on that connector and blew the engine fuse! Lights on seperate fuses so that ecu must do more? And be linked to engine fuse somewhere! Anyone know the full function of that relay ecu? Or have any idea where to look for answers?? Cheers any help much app