I kind of guessed the S1 relay was more reliable. To be honest i think the purple ones are vastly over rated...........16A i believe What strikes me is the connector to the fuel pump has 2 very skimpy little pins to solder onto the board, one of which not even being connected on the board, its merely there to hold it in.....i can't see that 1 pin which is about 1mm squared coping with 16A and thats the only thing that ever goes wrong with them. Out of interest have you ever measured the current flow for the fuel pump???? I'm going to use my fuel pump relay to switch a 40A relay to power the pump, ive already burnt one out and i can't be doing with keep messing around with it.

Why on earth would they build a rev limiter into the fuel pump relay aswell????? That seems like a very crap idea to me? Some people just don't have faith in repaired items, obviously i know like you a solder joint is simple to fix though...