Quick question: Do I need to cut off battery when working on head/tail lights?

[nickxtsui]

As title. Thanks a lot.

[nickxtsui]

Also, if I cut off battery negative end, is there any I will miss after it is restored? For example: if you take off the battery of an AUDI, the radio will be locked after the battery is put on again. A radio code will be needed to unlock the radio which could cost $120 if car is taken to a dealer.

Just want to make sure nothing will miss after battery is taken off.

Thanks.

[leadfoot]

It depends on what you are doing. If it is just replacing light bulbs, there is no need. But for any job, if I were you, I rather pull the fuses out for the tail lights so that I don't mess the radio.

[nickxtsui]

Yea, it's a good idea. Thanks.

Originally Posted by leadfoot

It depends on what you are doing. If it is just replacing light bulbs, there is no need. But for any job, if I were you, I rather pull the fuses out for the tail lights so that I don't mess the radio.

[94BMW325i]

You will be fine. I rarely unhook the battery anymore, I used to think the same that I could damage things, but if you aren't turning the lights on, hitting the brake pedal, etc you aren't applying voltage while you are working on the lights.

[nickxtsui]

Even though I spray electric cleaner on the socket?