Before putting in new battery make up a jumper with a light bulb in it. Hook up ground on battery. Hook jumper to lead from starter solenoid (make sure taped and isolated from body) Hook other end of jumper to battery.
IF lite does not light you are OK - hook up battery.
IF lite lites you got something either turned on or you have a grounded connection. Pull all fuses and try again - if lite does not light now put in fuses one at a time to find what circuit trouble is in and go from there.
Dan Bentler