I noticed a random 100A fuse dangling near my battery. Am currently trying to identify some possible electrical issues and wondered if this might be contributing. It is disconnected on the end pictured, no idea where it goes to, the other end goes across the front of the engine bay above the radiator and goes in right about in line with the steering column. Any ideas what this is? I have the 2004 LS

The fuse

Dangly end

Entry into interior (red wire)

 

Thats aftermarket. Likely someone added a subwoofer amplifier in the trunk and just disconnected it when they sold the car if they took the sound equipment with them.

 

Ok, cool. Kinda figured, but good to know that's not my problem. Any clue where it hooks up in the bay? Can't find where it would go even if it is aftermarket.

 

You mention one end goes through by the steering column (hopefully not through the actual boot for the column as thats a pretty hack way to run power wire and hopefully isn't indicative of other hack electrical modifications). The other end is supposed to go directly to the battery.

A bit hard to tell from the pic, but it looks like the terminal hanging from it is designed to replace the stock battery bolt on a side terminal battery. Essentially it holds on the stock cable / ring terminal and it also gives you the additional threaded hole on the back for the ring terminal on the new power wire to bolt to.

But bottom line is that is that it would've been hooked directly to the + battery terminal when in operation.