I've considered getting the fuel pump loom too. I'm almost out of space at the battery with all the o rings connected to the terminals(ERST).
I know with that loom it needs to be fit inline with the factory fit one to trigger the pump with the ignition on.

Also for the price, Anyone one with an Escort RS turbo should get the Coil loom too.

I fit my Fan loom onto the Escort yesterday. It seems the loom has been revised, It now has an extra wire to ignition positive. I just routed that wire back to the battery(its designed so the fans dont run with the engine off.