Search cluster test...solidjake has a youtube video of how to do it...that'll give you your voltage of the car when off and on.
Give the battery disconnect a try...but first, see if the cables on it are tight or not...shop might have disconnected them and forgot to tighten them up...who knows?
Performing at the Comedy Cove--595 Morris Ave. Springfield NJ reservations 973 376-3840
A recent set
dmax on the radio every Wednesday 7-9 p.m. NYC time. Call in! (661) 449-9340 watsonnwatson.com