gauges in and batteries drained??

[mxracer511]

so i installed my gauges the other day havent even hooked up pyro and trans sensors yet just ran all wiring to back of gauges and hooked up ground wire and power wire for lighting and the one thats supposed to go to the gauge illumination and the next day when i came out truck would barely start but got it running and disconected both power wires but left ground hooked up next day come out and truck wouldnt start at all got it jumped drove it around for about an hr came back let it sit for a few hrs came back out and dead again juumped it again drove around for awhile shut it off for about n hr n half started up fine came home parked it came out this morning and dead again any one have any ideas?