have a diagram for identifying use of relays in the fuse box, will this help ?
if you still need the fuse diagram, you can contact me through email...nlp (at sign) vitiligocover (dot) com
Check fuse box - fuse #14
blaupunct
Torque specs for WATER PUMP Mercedes 420 SEL are: 7.3 diesel and 15 to 18 foot pounds of torque
The gap for your 420 sel is .32... dont forget to use a good plug!
answer
The fuse box for the 1988 Mercedes-Benz 420 SEL is located in the engine compartment on the driver's side, near the windshield. There is also an auxiliary fuse box located inside the cabin, beneath the dashboard on the driver's side, near the steering column. To access the interior fuse box, you may need to remove a cover panel. Always refer to the owner's manual for specific details on fuse locations and ratings.
I had the same problem on my 420 SEL, you first have to remove the window wiper fluid container and after you can reach the screws for the battery after that it is simple.
I would ask Google.
It's in the fuse box in the engine compartment ( far right hand side, looking from the front of the car). I thinks it is # 14 or #15 RED FUSE.
Under the hood on the fire wall just ahead of the stearing wheel up to the right of the fuse box
The fuse for the AC blower on a 1989 Mercedes-Benz 300 SEL is typically located in the fuse box, which is found on the driver's side under the dashboard. Look for a diagram on the cover of the fuse box to identify the specific fuse for the blower motor, usually labeled accordingly. If the diagram is not present, you may need to refer to the owner's manual for the exact fuse location and specifications. Always ensure to check and replace the fuse with one of the same amperage.