I recently had a situation in my classic 1982 Mercedes 380sl where I would have benefited from a whole car fuse...meaning a fuse that would pop when the battery to starter wire was grounded! Luckily for me...no damage other than to my wiring and to my belief that I had everything secured properly.
Now I want to install a main fuse between the battery and everything else. My question is how to size it. How many amps would be right? Other than a compressor driven air horn, all the electrical equipment is OEM. Your thoughts would be appreciated. Thanks. Dave
You could use an Amp meter to determine your amp draw.
The problem is when you start the car it draws the most.
I would see how many Amps your Alternator is and use that as a general guide to determine your fuse size.
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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !
https://inpcars.com/gxci/
Alternator - 1986-1989 Mercedes Benz 560SL 117.967
by Bosch
Key features
• AL 68 X : 70 AMP
• 1 YEAR WARRANTY
Description
Alternator - 1986-1989 Mercedes Benz 560SL 117.967
I would Install a 75 amp fuse between the Alternator and the car wiring.
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John DeRosa (Hotwaterwizard)
Stockton California
When in doubt, try it out !