Is it okay for my system to be wired like that?

[Puppet Master 10+ year member]

I am a total idiot when it comes to wiring, the terms, what is what in an engine, etc. I had a guy I know hook up my system, seeing as how I have no idea how. I was looking the other day under my hood and I noticed that the big gray wire under my hood with the huge *** fuse on it was wired to my fuse box(I assume that is what those two black boxes are). Is that alright? I thought you had to wire it to the battery. Anyone know?

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[ssj2xxgotenxx 10+ year member]

The power wire (usually red) should be hooked up to your battery positive terminal, and within 18 inches from the B+ terminal should be a fuse holder (Typically a clear cylinder shaped holder with a fuse in the middle). That should run through your firewall and into the car. Hope that answers your question.

 

[Puppet Master 10+ year member]

So the wire hooked up to my battery should have the fuse in it?

 

[Montypup 10+ year member]

Well it depends on the vehicle and the power of your system. Many of the new gm's have a pre-fused terminal on the back of the fuse box for just such a thing. However, for higher current applications (over 75 amps) you need to go from the battery

 

[ssj2xxgotenxx 10+ year member]

So the wire hooked up to my battery should have the fuse in it?

Yes, you NEED a fuse inbetween.... If there is a short, and you don't have a fuse.... Your F_ed.