OK guys...I'm gonna swallow my pride and fess up to this fact. I was never taught how to use a multimeter. I'm trying to figure out if my soldered joints are carrying enough (or better) current than the non-solder joints, but even after reading the directions, I don't know where or how to actually test the wires. I've got a Craftsman Multimeter and actually read the directions - but it didn't really tell me where to test much less how. Do you simply turn on the power pack and touch each rail with both the black and red testors? Or do you only touch one rail with the red testor and ground the black? I'm clueless...any help would be greatly appreciated. On the plus side, thanks to the Gauge emag, I read up on and practiced soldering (another skill I didn't have) and after a few attempts, actually pulled up some of the layout track and soldered them together. Not a bad job I guess...nothing melted and I didn't get any on the inside of the rails. I used an electrical solder the LHS said would be perfect - since RC modelers use it for their connections on cars and planes.