[Popeye75356]

I know this is a super old thread nonetheless I'm about to install the Pollak 6 port high pressure valve PN 42-159 to satisfy the return and high pressure requirements of on my 5.3L, with this said my question is why would I need to change out the wiring harness as the pig tail looks to be identical to the original?

Also, does anyone have wiring instruction for the in-tank pumps, I've installed them on 87' sending units but not sure how to wire up the pigtails ?

Thanks in advance!

Popeye