Fuse panel for '80 SC

[Sicklyscott]

Hi -

A few weeks back I decided to go through my fuse box to try and find a slow drain. I found a couple fuses that seemed to be bonded to the upper contact. Instead of playing with them i tried to reinstall the best I could. In preparation for a long drive this weekend I hooked up the trickle charger on Monday to get the battery in tip top shape.

Fast forward to today. I twisted the key and nothing happened. The battery was completely dead. I opened up the frunk, juggled the battery post and ended up getting some juice, the lights work, the radio was on, and when i twisted the key to start you heard the fuel pump. What you didn't hear was the starter clicking.

What I'd like to do this evening is go back through the fuses and see what those 2 stuck fuses were supposed to operate. I don't think they are the cause but I'd like to be certain. Can anyone post a picture of which fuse is intended to do what in the car? It's a 1980 911 SC Coupe made for the US market.

Looks like i need to break down and buy a Bentley.

-S

[javadog]

Look inside the fusebox cover.

JR

[theiceman]

also buy a simple meter and learn how to use it . will save you hours of heartache. lots of people here will teach you how to look for a prasitc drain ..
about the only gotcha to this is if you have a bad diode in the alternator.

Id start with making sure battery terminals are clean and tight tho .

[OsoMoore]

Inside the fusebox cover there is a listing of what each fuse should do. It is hard to read in low light because it is raised black plastic on the black plastic cover. However be aware that it is not uncommon for a previous owner to change around the fuse configuration.

I would start by using a voltmeter to ensure your battery is at 13-14 volts.
Another common culprit is a bad ground. There is a copper braid strap from the transmission to the body that might be giving you a bad connection.

I have also had a starter solenoid that did not respond, but that only occurred when the car was very hot. I would check your grounds as well as check the continuity of each pair of fuse contacts. Good luck!

[targa80]

If you have the original red coved owners manual it also has a listing of the fuses and relays for the car.



This will give you an idea where the listing is on the cover.

[Sicklyscott]

Thanks folks.

The cover was too hard for me to read in my garage.

I do have a multimeter, what I used to test for the parasitic drain.

Starting to think it's time for a fuse box upgrade, maybe my winter project.