1974 engine compartment pictures

Hey guys I need some help, looking for stock engine compartment pictures. My car is a 1974 318 car. The po did some bad things to her and now I'm trying to sort them out. Trying to find the location of the horn (wire color would be a bonus) also I'm looking for vacuum routing (canister-radiator thingy-air cleaner-egr). I've tried Google but could not find any good pictures. I have no idea where the horn mounts. Thanks for any help/pictures