Thoughts?

Old voltage regulator:
Key ON:
Fuel reads half
Temp reads 120
Engine ON:
Fuel and Temp Peg all the way to right


New voltage regulator:
Key ON:
Fuel reads empty
Temp reads -120
Enigne ON:
SAME.

Tested gauges and sending units, both check good.
Dash ground good, connections good.
WTF?:angry7: