R/H indicators slow to flash, L/H normal.
With the L/H flashing R/H rear flash dimly,
with the L/H rear units unplugged and L/H selected, L/H front and R/H rear flash

I've checked the grounds at the back and all good,I'll have to re position the car to get to the fronts.
Plan is to check all earths,and wiring where pos without breaking into the looms, next replace the flasher unit, then attack switch.
question:-
1/where can I source a switch from? not listed on the few sights I've been on
2/ there's an under dash voltage regulator,would this affect it if duff.
3/why does this happen when its cold and dark
Ta Much