Bought red LED interior lights i was gonna put in the footwell on the front passenger and driver sides.. after i bought, and opened i found out that they weren't the kind you plug into lighter area..they're ran off of 10 button style (laser pointer batteries) in them.. anyone know how i could change the battery style so they're ran off of the car battery and not batteries i'de have to replace probably every 2 hours?

 

you'll have to figure out what voltage they are and then find a power cord that would supply that voltage and then wire that power cord into the lights, almost all small electronics like cell phones, ipods, & gps units are 5 volts, and almost all car accesories like lights are 12 volts. if the 10 button batteries are all in 1 line then the voltage would be 15 volts (assuming each battery is 1.5 volts, that info should be stamped on top each battery) if the batteries are in 2 stacks side by side then the voltage would be 7.5 volts, read this article to understand how to calculate voltage from mutiple batteries.

http://www.zbattery.com/Connecting-B...es-or-Parallel

or it might just say on the package what voltage the lights are.