Hey there, hopefully someone can give an idea. I just installed a new oil pressure and temp gauge both are mechanial gauges. Now for the problem, it already had these I just replaced them with new ones but I am not getting any light any suggestions on getting the bulbs to work. I tried to reconnect what the person before me had done but it does not work. The bulbs have a red wire and a black wire and not sure on how to tap into the dimmer switch in which the instructions say to do. These are sunpro gauges. Thanks for the help.