Right behind the battery.

My last attempt at replacing the bulb worked (sort of).

I got the bulb screwed in tight at the cost of a bit of skin and
blood.

I later found that I'd managed to get it in at an angle by the simple
means of driving behind a white cube wagon and seeing where my beams
were hitting the back of the van.

Is there an easy way of getting access to that <ahem> darned lamp
location without taking out the battery?

barked knuckles and broken fingernails.....