Bought a set of KC 130 watt 12 volt halogen lites, wired them up with a switch to a 30 amp relay. Worked fine and then quit, took 12 volt from battery to relay to lites through a 25 amp fuse and grounded to frame. Checked by laying bulb housing to - battery post and hot to white wire, nothing. Neither ohm out. Is it a problem with too much voltage off battery when chaging 14 VS 12 or not a good enough ground that took out both bulbs. Or could it be vibration, mounted on front push bar Thanks Gordie