broadbent23

I have a 1986 mustang. I just took my car to a garage to trouble shoot a ignition problem and when I got the car back I noticed a lot of wiring changes and now the radio doesnt turn off with the key and the dash lights no longer work. For now I have the radio wired to a seperate switch till I can figure that out. I changed the head light/dimmer switch and did not fix, I assume it is related to the same reason why the radio doesnt shut off with the key switch I also replaced the ignition engine management switch. Does any one know what could cause this or know where I can get schematics? The garage I took it to wont admit they did anything wrong and I dont feel like fighting with them. any help would be appreciated.