well this is has only started as of late....it could also be the battery but it doesnt seem ... while driving eiether just after start-up or after been driving for a while, my battery, door open,tailights out lights will come on for like a second or 2 then go right back off, so i pulled over last night and completley didssembledthe positive battery termina; and reassembled it...starts up fine. so today i start it and the lights come on for about 1 min , and the rpm's drop then come back up...not a big drop, but a difference in engine tone. anybody have a clue? im bout to get a new battery but ,considering a altenator also

jason