I've been having troubles with my headlights burning out prematurely. I was thinking that the alternator could be putting out too much voltage and thus heating up the bulbs too much. I checked the voltage last night. With the Jeep off, but the ignition in the on position the battery read 11.90 volts. with the Jeep on and at idle or upto 3000 rpm the voltage was at 14.9 volts. 14.9 seems to be too high, what do you guys think. Do you think this could be a problem for any of the other systems in the vehicle??
'90 XJ 3.5" with 30X9.5 BFG AT's on AR 767's, 3" coils and spacer from rusty's and RE AAl with MJ shackles. Rusty's Cat-back with flowmaster 3-chamber, air tube with K&N filter, Tuffy security box, Hella E-Codes 100/80W with custom harness, Hella 500 driving lights 100W bulbs, Rusty's tow hook's and brackets, JKS Gen II disconnects
To be installed: Rusty's transfercase skid, Rusty's motor mounts