this is my baby lol, i'm 17 been doin it up for a few years, these are some old photos with some parts missing off the car (side mirror, vents, radiator and stuff not in properly exhaust tips not on), she's just about finished now lookin at rego this week :)

Hey guys, i've got a 1976 datsun 1200 ute with an A14 in it, i;ve got the original horn that works, but the wiring that runs to it isn't working, i know they run off a negative, could anyone give me some tips on how to just rewire it?
And also what i can't figure out is why my tacho doesn't work when i have my lights on? by the way i've wired in a coupe dash into my ute