It looks like a standard gps unit of the era but it has a nice MB logo on bootup and it makes no mention of garmin or magellan (ect..). I'll post pic.

When you say "disk" are you refering to a cd perhaps?

I still haven't checked the tail light issue any further. I'll do that tomorrow.

__________________
85 300sd 400k
99 e300td 101k (hers)
34' californian twin 5.9 cummins
1999 F350 Powerjoke 75k
2001 F150 Supercrew 51k
19681/2 GT/CS