correct. it recieves the same voltage as the lights on the cluster. so if just one is in wrong, then nothing will light up. anotherthing is if you use to much heat on the LEDs, you can burn them out. should always solder one leg, use a heat sink, like needle nose pliers, then let cool, then do the other leg, use heat sink and cool.
soldering is nothing to get in a rush about. i worked in electronics for 15 years, and was an A student in vocational electronics for 2 years. never be in a hurry when soldering on electronic parts. they need to cool a bit before touching again with the iron.
2006 gmc 3500 xcab lb, with the LBZ.
with air dog lift pump, race valve, egr delete, and efi reprogram, thanks to husker diesel.
84 gal fuel cap.34 main and a 50 gal aux transflo system.
20k curt 5th wheel, 20k goose neck.
still stock. 4x4. 430,000 miles and counting.
transporting new units from factory to ia. dealers and ship.
engine replaced at 404,000 mi with one with 118,000 miles.