DEAD 1972 plymouth valiant

I'd like to cut all those wires out from the bulk head and splice them together. then no bulkhead to deal with. has anyone ever done this..
i have. mine had a few melted cavities.
tips,
A: have a factory manual
B: double check someone hasn't re-routed something and that all the wires are in the right place
C: learn to read the manual before you start cutting
D: pull the front seat and put some packing blankets on the floor

i unplugged everything on the engine side and popped out the cavity fitting from the firewall. that way i had working room. i did one at a time. i used THESE style butt connectors with a double layer of shrink sleeve over each splice. use GOOD crimpers. i use sta-kon pliers for this style connector but there's others out there. i also removed wires i no longer needed and added a few new ones. everything worked first time. you need to workout how you want to seal the hole too. at the moment i just have a block off plate i fabbed since i moved where the harness goes into the engine side.
i am going to redo mine. i want to re-route the main harness under the fender and get a cleaner look, but just removing the plug is not that big of a deal.
of course if you ever have a problem you might be cutting instead of unplugging something to fix it...

good luck