I love my old analog 260. These new ones (DVM) that jump around while your scratching the lead for a good ground cause me grief. Moving on, hook your battery/charger, gauge, and sender up as it would be in the truck. It goes like this...jumper from battery or charger red (+) to gauge (+) terminal, jumper from gauge sender terminal to sender center terminal (the one thats insulated from mounting plate, jumper from sender mounting plate (thats your ground when mounted) to neg. (-) side of battery. One more jumper from the neg. of battery to case of gauge, if you have a ground lug on gauge, hook a jumper from it to the gauge case also. This powers up the whole thing. You now can move the sender float from stop to stop (top to bottom) slowly and the gauge needle will move from empty to full. If you get any other reading, we will have to dig deeper. BTW, do all this on an insulated surface like wood or shop towel. Now a little advice...if you don't have any jumpers go to your local electronics part store and buy a handful of alligator clips (Muller makes the good ones). Using different color scrap wire, make up a few of different lengths. Also while your at the store, buy a 0-100ohm or 0-250ohm 2 watt variable resistor. Cost of couple of bucks. Down the road these item will be more helpful than a gun in a knife fight.
