all electricity shuh off in my 1985 Porsche 928

Asked by May 24, 2017 at 05:47 PM about the 1985 Porsche 928 S Hatchback

Question type: Maintenance & Repair

I was installing a new radio in my 1985 Porsche 928 and it was working when
fuse to radio blew I believe. I replaced fuse with higher amp one but radio did
not come on again.  Soon all the power went off in the car. I have
disconnected radio but no power to the car anywhere now,

1 Answer


You must have shorted something by touching a wire. ONLY replace fuses with the CORRECT AMP same fuse. By using a larger amp rated fuse you have the risk of melting wires and destroying your car's entire electrical system! You should only have power to the radio with the ignition key in the "Accessory" position or when the car is running. Check ALL the fuses with a fuse chart (owners manual) and make sure they are correct size and all good. You mentioned the radio "was working". Perhaps you've tried to install a radio that uses too much power? Remember this car is 1985, so make sure the radio spec power requirements aren't too much for the rated fuse.

Your Answer:


Looking for a Used 928 in your area?

CarGurus has thousands of nationwide listings and the tools to find you a great deal.

Postal Code:


Porsche 928 Experts

  • #1
    Tom Demyan
  • #2
  • #3
    Michael Griffin
View All

Related Models For Sale

Used Porsche 911
9 Great Deals out of 250 listings starting at $15,945
Used Chevrolet Corvette
8 Great Deals out of 530 listings starting at $9,950
Used Chevrolet Camaro
11 Great Deals out of 931 listings starting at $11,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.