Electrical gremlin

[Horch]

Advice needed! My '81 930 has some symptoms and I hope you can help me in the right direction. Car is 100% original.

Symptoms:

- right front indicator not working (fuse keeps blowing out)
- fresh air blower stopped working
- with the lights on, I cannot turn the car off; lights out, engine stops right away
- dash light speedo very dim (all other clocks are good). All lights from all clocks were replaced 1,5 year ago.
- the small green light in the top of the speedo flickers when driving off (faster and faster and then stays on)
- speedo not showing the right speed (less than actual speed)

What did I do so far

- Replaced the alternator. Did not have any effect
- Just ordered a new speed sensor (attaches to transmission). I think I damaged the current one when installing the engine last year.
- I did replace the light switch last year. Any correlation?

Any help is appreciated!

[Not Stig]

Engine won't turn off with lights on. I had this problem and believe it or not it was caused by the wrong bulb in a taillight. A single filament bulb where there should have been a dual filament. No clue as to your other gremlins, good luck.

[Dpmulvan]

Fresh air blower