[frankh]

Is the motor physically cranking over on the starter or is it just clicking?

You know the starter and battery are good so..

If its not cranking then you have a bad cable connection between the battery and the starter.. either on the power side or on the ground side... I.e lots of current has to flow from the battery to the starter and back to the battery again.

 

[frankh]

Found issue. The fuse box battery terminal!

One of the big fuses was blown??