EFI Conversion Fuel Tanks... LH or RH?

[donw1986]

I have attached 1987 wiring diagram and 86 and earlier diagram, the 86 has 4 wires to the switck, power, ground ,left and right valve i unplugged the power comming in and replaced that with power from the msd atomic going to the pump(s) then spliced the power to the pump into the light and dark green wires repectivly,for left and right pumps and used the switch from the 87, the punk wire goes to the gauge and the pink and black, and pink and white go to the sending units respectively, the 87 senders have a purple wire for senders and a grey wire for pumps