Interesting!
If you remove the headlight and lift the grey wire from the flasher unit
( power to switch)
you can use a meter to read the resistances to ground on each side
as you switch from one to the other
Bulbs will give a low reading so best remove them too
the idiot lights are on flying leads IIRC and easily disconnected
with all bulbs out of circuit you should get a high resistance reading
when the switch is in the RH position
If you dont, you have a short in the cabling, lamp holders or switch
The black multiway connector carries the cables from the LH switch gear
if you open that and test between the light blue an green wires from the switch
you should get very high resistance in all cases
If you dont you have a short in that area
Now test between the Light/blue and ground on the connector going to the harness
and lamps
if you get continuity, the problems that way.
Disconecting the lamp wires locally and testing in turn may help point the way
Good luck!
HTH
If you remove the headlight and lift the grey wire from the flasher unit
( power to switch)
you can use a meter to read the resistances to ground on each side
as you switch from one to the other
Bulbs will give a low reading so best remove them too
the idiot lights are on flying leads IIRC and easily disconnected
with all bulbs out of circuit you should get a high resistance reading
when the switch is in the RH position
If you dont, you have a short in the cabling, lamp holders or switch
The black multiway connector carries the cables from the LH switch gear
if you open that and test between the light blue an green wires from the switch
you should get very high resistance in all cases
If you dont you have a short in that area
Now test between the Light/blue and ground on the connector going to the harness
and lamps
if you get continuity, the problems that way.
Disconecting the lamp wires locally and testing in turn may help point the way
Good luck!
HTH
