Got the new pump and the instructions say " Connect the red/positive power lead to the oil pressure safety switch. If this pressure switch is not available,connect to the ignition switch voltage supply terminal "Darrell wrote:"googled" Facet fuel pump amperage and found this
http://www.facet-purolator.com/faq.php
So I'm sticking with the black and white wire to ignition coil/carb solenoid (on an SJ) fused to the pump at 3amps.
Not sure what colour the coil feed is on a vitara though
It shows a picture of a pressure switch with three terminals (marked "P" "S" and "I" )