Thought my pump had seized so took the opportunity to buy a 044 pump and MSD loom. Fitted today with new loom and old pump + used for trigger on new loom. When i turn ignition on, I get 1 second apporx of pump prime and then nothing. Put a volt meter on it and getting 8v for a second then 0v.

I assumed the new loom with its own relay would do away with the old relay, but im thinking the problem must be with the old relay as its still been used to trigger the new one?

Is the OE pump relay the purple one under passenger dash and 30amp fuse?

Any advice??