dash wiring

Dropped a 67 331 in place of the 4 cyl in my 88 lx, but as you can see the dash is still a mess. Anyone have a method to tell why I need/ can remove or have a good diagram I can use to clean some of this garbage up? I've got a whole new gauge set, pulled out to computer, the whole 9 yards

The wiring in my 65 have dried out and I am seeing increasing faults in lights etc. My car was restored except of the wiring. How involved would the work be to completely overhaul the wiring? Can this be done without ripping the entire care apart? Would this be costly operation if I have...

I am converting my dash guages from bulb to gauge and have a new wiring harness. Inthe harness, there is a very heavy guage black with yellow trace wire with a round socket connector on it (please see photo). It remains hot with the battery connected and the ignition turned off. I am having...