no high beam headlights

Things we have already done.
1 changed both headlights, confirmed with continuity check.
2 replaced headlight switch. still no high beams.
3 replaced the relay (part number - H8002B).
4 checked every fuse in the coach. (continuity confirmed)
5. checked for power at the relay in both directions. power is good.

????
2000 Newmar mountain aire.
low beams work, as well as parking lights as well as the dash dimmer.

suggestions ?