Simple question-W126, Fuel pump relay-where? - PeachParts Mercedes

My 1989 300SE needs to have some fuel related parts replaced. These include the Fuel pump relay, switch over relay and fuel pump/filter. The latter is

W126 Relay Identification - PeachParts Mercedes-Benz Forum

M119.960 into a 560SEL - PeachParts Mercedes-Benz Forum

Fits for Mercedes-Benz 380SE 1984-1985, 380SEC 1982-1983, 380SEL 1981-1983, 380SL 1981-1985, 500SEC 1984-1985, 500SEL 1984-1985 Package Contents: 1x

XtremeAmazing Fuel Pump Relay for 380SE 380SEC 380SEL 380SL 500SEC 500SEL R126

M119.960 into a 560SEL - Page 3 - PeachParts Mercedes-Benz Forum

1989 C126 420 SEC crank position sensor faulty?, Engine

Fuel Pump Relay Mercedes-Benz Forum

1987 300TD cranks wont start after sitting overnight

What happens to your Mercedes fuel pump relay when it fails?

500SEC W126 2nd Gen Fuel Pump relay

1972 350SL/450SL Fuel Pump Assembly