Wiring gremlins

OK here's the skinny 1969 barracuda fastback, when i got this car eng bay harness had been chopped like nothing ide ever seen before, and park lights would not work with any headlight switch. A buddy of mine jumped p\lights off ign source, and we managed to make everything work ok.
So now im back at it, used a 71 demon eng bay harness and now i turn ign to start and horn honks?!? I have pulled entire dash and eng harness out and am going to attempt to rebuild on bench , i was also getting a donk noise every 3 to 5 seconds and no charge at batt. noise sounds like relay going off,anyway i pulled the wiper plug off back of switch and noise and pulsing went away? this should be a fun adventure. I have also aquired center console and harness(still looking for mount brackets), and i dont see where harness plugs into, wondering if it comes fwd from rear harness or where?
Dash harness looks untouched other then splice at lighter on pass side??
Any insight would help