Hi, at the minute, I have an issue with my front passenger side indicator, in the headlight. Odd times, it won't work, but the back indicator and front wing indicator work, just blink quicker due to the front headlamp. What is likely cause? A garage got a new indicator bulb holder, tried it but didn't work. So put my old holder back in, twisted it and it started working again. Garage said you may need new headlamp as it may be the terminals. Any ideas please, do I get new headlamp?