Okay, please bear with me and feel free to address me as "moron" in any replies. After decades of working on automobiles I'm finally trying to get a much better grasp on auto electronics. So I bought a Power Probe 4 and the more I'm trying to us it, the more questions I'm having with not only the tool, but also auto electronics. Here's a situation I'm dealing with right now that I really need some help on:

I found (via a DVOM) that I have a parastitic draw when measured at the battery of .67 amps. So after watching the limited amount of videos that exist on the PP4 I am trying to use it to find the culprit(s) vamping power from my system. I have the PP4 in "Feed Test" mode and I am probing all the fuzes. The questions begin (this all with Key Off):

1. As I probe the fuzes I get the green light for negative switched or the red light for positive switched as well as battery voltage and some have show .05 resistance. Why am I not getting a red or green light?

2. A couple fuzes get no reading at all (not speaking about the spares).

3. When I probe the instrument cluster fuze I get very high resistance (~2,700(yes that's a comma) and am also showing a PP4 "Tip" voltage of about .46. If I am understanding the PP4 videos correctly that means the instrument cluster with the Key Off has a voltage drop of near half a volt. Correct? Suggesting that something in the cluster is drawing power when it shouldn't...or am I way off base?

Thanks in advance...GREATLY!