Ok heres one for ya.
sometimes while driving, the spedo goes nuts, the seat belt, battery, lights come on, and if you shut the motor off and try to restart the battery seems dead. but if it stays running, you can drive it. last time this happen I let it sit a week and it started back up.???? Had the alt and battery checked, AutoZone says its ok. last time it happen went to start it after work and it was dead. Got a jump and all was good. Charging at 14.3 volts. Seems to be a short somewhere. Has this happen to anyone else..
Thanks for any help!

 

Any codes? That sound like its gonna be fun. Break out the mutli meter and magnifying glass and start looking for shorts/bad connections.

 

NO codes.. just 12 and 55. Will probally have to wait for it to happen again. I did continuity check from battery cables (disconnected) good path to ground, Pos to ground seems be ok.. no direct short. no blown fuses, Thinking it may be a battery short, but hate to spend money on new battery if not needed, plus its been sitting for 2 days and still holds a charge. Im baffeled!!!!

 

if its only happens while your driving i would place money on a lose wire somewhere, 1st test push in on your cluster may be jarred out a lil bit, second one tiny little hot wire going to ground I would check the yellow continuous power wire on the radio if i were you. If that doesn't work, tighten down all the grounds you can find, then if that doesn't work, go to lowes and by a 10 pack of cheap electrical tape, and tape the S*** out of every wire under your dash and all the wires going to your pcm, and by the way try pushing in or disconnect your battery and disconnect and reconnect your pcm (may be a dirty connection) You said you did a continuity check, but did you try using a MEGGER? For those who don't know a megger is the king of all continuity checkers, what you do is you hook one side to the ground cable and one side to the positive cable, (battery disconnected of course) and turn a little crank type thing what this does is check for integrity to ground, in a dc circuit you should have full integrity, (sorry for the long post, use to do industrial motor control circuits a while back and got really good at electrical theory after year 4 on my apprenticship) any other questions pm me and I'll get back to you.