cant find the fuel pump relay on my 500sel 1984 any help pls

 

It is in the fuse & relay box under the hood on the driver side.
I had one fail, pulled relay apart and found hair line cracks around the solder joint of actual relay to the PCB in side the realay. Resolder joints, never failed again.

 

which relay is it there vare 8

 

Actually its located in between the engine room firewall and the main firewall in the middle.It has 11 pin some have 12 pins