RE: How to change 1995 S420 headlight bulbs
To respond squarely, if you would lift the hood and remove the top cover and observe into the headlamp well; you'll find another dust and moisture cover. Remove the cover and peer in at the bulb housing. Upon doing this, you'll find that it is simple to replace. Or, you can simply go to the dealership, purchase the bulb. Often times, someone from the Service Department will even put it in for you at no charge. At least that's been my experience where I live. If this information that I'm giving you doesn't work, then perhaps others may be of some help to you. You can also go on-line to manualunlimited dot com and order you a repair manual which is awesome, but it will cost you 80 bucks. Or, finally, you do as has been suggested; Subscribe to Alldata dot com.
Best wishes with all that you endeavor to do
'08 Chevy Impala 2LT/FlexFuel
'02 Mercedes S430 w/S5 AMG Sport Pkg (Black/Charcoal)
'97 Mercedes S420 (SOLD)
'97 Cadillac Catera
'95 BMW 740iL