I will roll my sleeves up and go after the warning light this weekend.
I will do the fuses again , cause it is time. - though the cluster fuse seems to govern other things that have not been affected...
I will do the tail lights even though they are all working - including the brakes. tried that with a helper.The bulbs looked good. Of course the car was stationary when checking, but still the lights work and at the same time so does the warning light. Away with tail light corrosion !
Sixto- The relay option is interesting - Which relay are you referring to ?
Thanks and I Will report with any good results.