My Speedo is not working, abs light on, fuel gauge

My Speedo is not working, abs light on, fuel gauge is not correct, rear wiper not working. All these problems happened at about the same time. All fuses are fine, had the ABS module checked and no problems but the car seems to run with the exact same faults with the module removed as when it is in place. Its a 2000 W reg 523i any ideas?

I have just bought an ohm meter to check the wiring loom for the abs ecu but would a problem with the loom cause all these problems?

Also the computer display on the dashboard is extremely unclear with missing letters. The dashboard was taken off beofre these problems started to fix a climate control problem. The problems started 2 weeks after that. Any ideas?