I have an 89 XJS convertible. On the right side of the trunk, there is a set of relays (2) and another black box, about two inches square. I think one of the relays is for the fuel pump, but which one? And what is the other one? Any help is appreciated.

 

In your trunk the relays should look like this;




Relay #2 is for the Fuel Pump (Part # AGU1068)
Relay #3 is for the Fuel Injectors (Part # AGU1070)

Mark

 

Thanks, Mark. What is #1?

 

Fuel interface for Trip Computer.