91 Cuddy electrical problems

[nipper]

Thanks, Destroyer. I am not good at all with electrical issues. So, I have been testing the positive wires by attaching the clip to ground and then probing the positive wire. The test light is self-powered (I think--it has 2 AAA batteries in it). Do I do the same thing for testing the ground wires--i.e. clip to ground and probe the ground wire. Or, do I clip to positive terminal of battery and probe the ground. The second just does not sound right and kind of dangerous, but what do I know!