Pulsar Headlight problem

No its not the Green/Black wire from the sterio!!!
I have a 1990 Nissan Pulsar Badged as a "Reebok" on low beam the headlights work fine but when I switch to high beam the right hand lights (both High and low beam) dont work, the left hand ones work fine.
Can anyone help with a diagnosis please.

The N13 Pulsar/Astra shape have a very common problem with the headlight switch in the steering column. Holden and Nissan dealers actually keep this in stock as it is that common. Holden one is identical part and about $5 cheaper.