hopalong_70

My 91 GT Conv came with a really old looking aftermarket alarm stuffed into the drivers left kick panel. I took the panel off to see how difficult it would be to remove it. There's a horrible looking mess of wires in there. I don't know whats stock and whats not, and there's loads of cut/spliced wires in there. I want to get rid of the whole mess and install a new harness. Has anyone done this, and if so is it a difficult task? The harness looks like it goes through the firewall? Thanks.