pmsl

i know what your saying ,its on a budget i spent more than i thought i would and i got all mfi stuff . im ok with stripping it down and splicing in its just wires and coulors and what goes where, 12v+, switched earth? etc also ive already got the 3i pump in car allready wireing can i leave that in or do i have to conect into that relay? any info much apreciated m8 cheers