just the heated seat looms alone on mine were made up of 4 seperate looms at £30 each mind
so
take 1 diagram
add research and a list of part numbers to order
and a selection of correct amperage wiring
add the plastic blocks needed (genuine)
clip in the pin connections (genuine)
solder wires as per diagram and check/secure all
connect and test
VOILA - same thing for £35
100% made up of money/time/skill is all thats needed
i was skint so i went for options B & C