The high beams on my Honda 02 Odyssey ( Canada series ) only works on occasions. The bulbs and contacts to the lights are ok, the two relays under the hood are working,fuses look good in all fuse boxes. before I tear into the switch on the steering wheel, is there a high beam relay some where? I've been told that the switch on the column seldom goes bad.

Looks like there is a control module involved here ! Does yours have Auto-off Headlight Function ?

High Beams

The headlight relays receive battery voltage at all

times, and on EX and EX-L models are controlled

by the driver's multiplex control unit. When you turn

the headlight switch to the HEAD position with the

dimmer switch in HIGH, ground is applied through

the BLU/RED wire to the coils of the headlight

relays and through the ORN/WHT wire to the DRL

control unit. The relays are then energized, applying

battery voltage to the left and right high and low

beam headlights through fuses 43 and 45. The high

beam filaments come on because the control unit

applies ground through the RED/ORN (cavity 1)

and RED/WHT (cavity 11) wires. The low beams

remain off because the dimmer switch interrupts
their ground path.

Could be a contact, in the chain, not 100% in working order. It could lose contact by temperature, moisture or any other natural cause. Even contacts in a relay can be faulty and you should not rule out a relay what is clicking. Only measuring the resistance in the chain or the drop of voltage over a contact can bring you to the real cause.