Speedometer and wipers didn't work
 

Hi,

Last week I drove with my 911 SC (1980) and the speedometer and windshieldwipers weren't working.

After I parked the car and started after half an hour the speedo and wipers came to life again...

I checked the wiring diagram and couldn't find a common spot, except the ignition switch (pet-number: 91161301701).
Could the ignition switch be the culprit? That due to aging it sometimes fails?

And for replacing I see 2 approaches:
- removing the entire assambly by drilling the break-away bolts: Pelican tech article
- Only replacing the switch-part by diving behind the dashboard: Youtube-video
Which do you recommend?

So in fact 2 questions:
- Is the ignition switch the root cause of the problem
- How to replace it as easy as possible?

Thanks for your replies!

Just went thur the same problem. You have a burnt out wire some were which requires an electrical tech. Took about 3 to 4 hours to fix https://notresponding.net/windows-media-player-not-working/

Does somebody else knows what's the issue is?

I can't imagine that it's a burned wire because then it would never work, isn't?