am trying to get an accurate reading on my air/fuel so i got the 60 mm greddy gauge. but when i try wiring it up different ways all i get is the warning light telling me i have a wiring problem.does anybody have this gauge, if so can you tell me how you have yours wired.I ran my constant to a open fuse location, ignition to my ignitions coil fuse and ground to metal connection on bulk head, and white to headlight fuse.