1989 325i; Instrument cluster and heating system stopped working!

[JayCee 26]

Hey guys,

I was driving my bimmer along the motorway when all of a sudden my fuel gauge, temp gauge and rev counter all dropped to nothing, Also my heating system also stopped aswell.

Along with my handbrake light and oil light and service inspection lights i later noticed.

My engine had recently been creeping up on the heat so i would just simply crank the heater to bring level back to normal and so now i cant really bleed my car well, i got it jacked up on the coolant side to make the resivor the highest point but im just afraid i may overheat while driving it back home.

Just had a whole lot of work done on her to get a new wof last week and so now im going to have to bring her back to hell bm

If anyone could maybe help me know if they have heard of this happening id be very appreciative, My fuses seem fine, its weird that my speedo and odo still work fine though,

My obc seems to still be in good working order,

Many thanks, jordan