hi all my car failed mot today on a lot of things but one that is stressing me at the minute is that my rear drivers side fog light doesnt work. the passenger one works fine when they are switched on. i have tried a new bulb but no joy(swapped bulbs around) so this isnt the fault. i would gladly wire the working one to the not working one if anyone could tell me how. also i bought a multimeter and dont know how to use it or where to put the black wire when im using the red one to touch the wires lol. any help would be greatly appreciated. thanks