My 71 mgb has developed a problem after a wire from the interior map light popped off. I replaced the entire unit. Anyway, after hooking up all the wires the way they were, checking fuses, connections, etc I find now that the horn will only work when the headlight switch is in the on position as well as the map light. Turn off the headlights and both stop working. I have looked at all the schematics and see that the headlight switch and the horn and map light are all on the same fuse. Is it possible there's a problem with the headlight switch?
Also up under the dash behind the radio there is a green spade wire that I have no idea where it goes. Any ideas? Tried posting a picture but don't have permission.
Any info appreciated,
cheers,
john