Quote:
Originally Posted by Mobius
Probably why every shop manual and most how-to's start with:
Step 1: Disconnect the negative battery cable..........   |
uh-huh.
And do you know what happens when you reconnect the negative battery cable?
If the lights have been moved at all, they do a recalibration when the battery is reconnected. A little scary if yours (or someone elses) fingers happen to be near the lights.