Wwes
I have to look up FP sending unit wiring. Usually it is a three wire configuration: FP +12, Common ground, fuel level. Fuel level is a resistance 0 to 90 Ohms.
According to Pollack Data sheet 42-159 fuel tank switch can handle OE pump pressures 65 PSI deadheaded. Should be just fine for TBI/TPI rated pumps.
http://products.pollakaftermarket.co...n-valve/42-159
Check supplied diagram for dual tank operation
http://products.pollakaftermarket.co...S_41-revdd.pdf
Factory wiring at the FP sending unit.
Tan-white - FP +12Vdc, circuit #120
Pink - fuel gauge, circuit #30
Black - Ground return, Circuit #150
//RF
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"The Beast"
1975 Chevrolet C20 longbed
350/
700R4! with 3inch body lift
Dual Flowmasters Super
40's!
TBI retrofit completed (2007-07-29)
New 383CID (+030) 08-304-8 9.5:1CR x36,005 (2012-12-17)