I just bought a used car, a 1996 Jeep Cherokee Country. The power locks do not work. When I press the lock switch it clicks under the dash/steering wheel but does nothing. I looked at it and it is a fuse box I guess, with large square blocky fuses. I would guess that they are blown but not positive. If that is the case, could anyone tell me where to purchase such a fuse? Normally I have only seen the small colored ones. Thank you