Old, Old amp

Each separate wire should be fused, so if you're not using a fused distro block you can install inline fuses (rated for the power wire) into each of the feeds, close to the distro.  Even though the main wire is fused at the battery, splitting the wire will create an electrical connection between amp A and amp B.  The amps are fused to protect them, but the feed wires from the distro to the amps are not, so thus the additional fuses.

I'm currently planning to do the same thing, and I also had/have the same question.  But when I answer to someone else, it becomes clearer to me.  So I will be fusing the wires like I posted here unless someone clarifies this issue for me.  I thought I would use a simple brass distro block like this and install inline fuse holders before the amps.  Whatever costs the least.

Thanks, D'Yohn, I have a JVC KS-12 so I don't know what the voltage is. I've had it for about 4 years or so and it doesn't have RCA jacks.  I didn't know the old stuff couldn't handle more than 2 volts of input.  Also a funny thing I noticed with the Audiovox amp was that it is labelled in reverse.  The RCA jacks say Hi input and the speaker jacks say low-input.  Could it be mis-labelled?  It seems the new stuff you can adjust the gains whether you have the speaker inputs used or the RCA jack used.  The Audiovox I remember using the speaker input jacks and the gain control didn't make a difference.

Thanks Stevdart, I had an inline fuse for this amp when in 1986 I 'decided' to let Circuit City install this amp with an old Coustic cassette in a 1975 Ford Torino.  At least they knew enough then to put a fuse next to the battery.  I'll use that. I think it was either a 20 or 30amp glass fuse and it never blew.  I 've had this amp in 4 different cars with about 5 different HU's over the years.