Newbie here ? 07 Fiat punto grande / the previous owners had fitted Xeon lights. Anyway - the back lights are not working properly, the indicator light stays orange but does blink when indicating. It’s like they all need replacing... I’ve tried replacing all bulbs but that didn’t work, is there something that needs replacing like a switch or fuse? Now to the aftermarket xenon lights. I want to go back to standard... is this easy? ? novice here, not a great machanic ?