I just bought an hour meter, which fits the punched hole perfectly. It says to get an accurate reading, ground the negative and attach the positive to the positive cable coming from the alternator. What color wire is the pos alt wire. Someone told me it only has to wrap the exterior of the alt wire? Is this true? Also, the wire coming from the user console had a wire with a plastic quick connecter clip that wasn't connected. What is that? It looks like it would be for an hourmeter. Thanks in advance for the help.