Just picked up my new & reworked sending unit which had a Walbro GS342 Fuel Pump added for my Fitech install along with 3/8 feed line and quick disconnect fittings/nylon lines. Everything looks good, but I'm worried about the grounding of the pump.
Rather than putting both fuel pump wires through the new grommet on top for thr sending unit, the shop that did the work soldered the pump ground wire to the sending unit body. This in theory will allow it to ground using the same ground as thr sending unit itself, which is via the ground tab on top and a small (maybe 16ga) wire coming from the harness. I'm worried that this grounding method won't be sufficient for the much higher draw of the fuel pump.
Should I add an additonal, maybe 10ga ground wire to the tab and fasten the other end to a solid chassis ground close to the gas tank or will the original sending unit ground work fine? I know most aftermarket installs I've looked up use 10ga typically for power and ground on fuel pumps, but most injected cars use standard gauge harness wiring like 16 or 18 to do the same job. Thoughts?
1978 Cherokee/Wagoneer 360/727/NP229 (soon NP208)
4" BJ'S Lift
Thorley Headers/Magnaflow Exh
Edelbrock Intake
Fitech TBI (in the works)
32" BFG KM2'S
Razor Grill
///This is a project vehicle///