Went to start my car and all the dash lights came on... Went to start, heard a click, all the dash lights go off, checked the battery voltage 12.3V. When I go to start, the battery voltage drops to near zero! some sort of ground? Where could it be? I checked the starter cut relay looked fine. Even jumped across the relay with same results just a click, dash lights out and no starter turn.

 

sounds like a ground but you may need a new starter

 

yea the load is going some where else besides the starter. check the battery cable to the starter and battery and the ground wire. or may also have a electrical portion of the ignition switch causing problems also.
what year and make is the car ? all stock or got alarm and other mod's ?

 

It was the starter. Two wires and two bolts later VROOMM!

 

glad it worked out

 

glad we could help