Sierra Relays

[deezee]

Right, I've been having trouble with my relays. I thought I understood the Sierra fusebox. However one relay "Engine Management" which I was using for my megajolt and fuel pump works in reverse! It cuts power when the ignition is turned to start?

Why is there a relay that cuts power when the engine is cranking? What was then originally connected too? I've double checked the wiring diagram in the Haynes manual and the only relay shown like that is the dim/dip.... which it defiantly is not.

Can I just replace this relay, or is something SUPPOSED to have its power cut when cranking?