I have a 2007 Ranger EFI 4x4, will not start, turnover, nor will lights come on. It sat overnight and the next morning cranked up but died shortly after. Any ideas? Thanks

 

Sounds like the battery is dead and you need to recharge it, or the connections on the battery need cleaning.
Polaris' won't run without a charged battery. Charge it with a 2 amp charger, and keep the battery on a 'battery tender', so the battery will stay fully charged and ready when you need to use the machine.

Don't use a charger over 2 amps or you will burn up the battery by charging it too fast.