Why not cook marshmallows on my under dash fire?

Coming back to this thread.

I have now uninstalled my entire wiring harness and am going through it. I am checking every single wire for resistance and cleaning up my soldering from the amp meter bypass.

How do you guys recommend checking for resistance? My multimeter have an ohm setting of 2000k 200k 20k and 200. While on 200 I have found that the norm for every wire is .3 of resistance. I checked one wire going to my ballast resistor and I am getting a value of 1.7. Definitely something different about that wire compared to all of the other ones. I want to ask everyone else before I do anything else. It is the brown wire going from the ballast to the bulk head connector. There is a wire spliced in with that one that either goes to the alternator or the voltage regulator. (forgot) I checked the wire on the other side of the bulk head and it reads .3...

Thanks in advance FABO gurus.