Just thinking ahead here, my MOT is due in July, car has been parked up for just over 2 months due to major surgery, now able to drive again so itching to get car mobile, looking to get the car serviced before using again but noticed one of rear indicators is not lighting up in the middle of the indicator, I assume the full light needs replaced, is it worth replacing both lights at the same time? I also assume.it will be an MOT fail?