New battery no power

Congratulations and thank you for reporting back with the fix.

Good to hear that you found the problem.

It was the positive cable on the battery. I cut the connections and re did it with new ones and it works.
Last place I would have thought.
Thanks guys.
Now that I joined in here I'll chime in with my vast knowledge

Check for a small circuit breaker within 3 feet of the battery. There should be a very small reset button, push to reset.
If there is 12v power when plugged in the reverse polarity fuses are OK and the converter is working.

Be sure you didn't wire the battery cables backward. That is a VERY easy thing to do, and it blows the reverse protection fuses on the 12v circuit board. If you did wire it backward, you have to rewire it correctly and replace the fuses, usually 2 or 3 LARGE amp fuses. On my trailer there are two 30 amp fuses for that.

There may be a circuit breaker or fuse near the battery.

Start at the battery with a multimeter and check the voltage. Follow the cables to the panel checking where ever there is a bare connection.

Two things come to mind. Battery disconnect switch and was it wired correctly.