Fuel pump

[Harleyboy1]

Does anyone know what size fuse and gauge size wire I would need to run the ep381 fuel pumps have 2 tanks with the selector valve also would this setup require 2 separate fuel relays or just 1 planning on an lq9 or an ls1 not sure if harness for the motor would exactly tie into the wiring to operate both tanks this is on a 1983 Chevy Silverado 1/2 ton any help would be greatly appreciated

 

[Camar068]

Good question lol I need to know as well. I'm guessing 16 would be fine. Someone will chime in soon.

 

[1973c10]

IMHO I would say you could use 14 gauge with a 20 amp fuse
if you stay around 10 feet of wire

 

[RThiel]

The pigtail on the sending unit that plugs into the pump is relatively small, like 16 or 18 gauge. That said, the wiring harness to the valve is around 16-14 gauge. You're only going to need one relay that will send power to the selector switch, and the switch will energize the pumps and switch the valve. The ecm switches the ground on the fuel pump relay to energize it. There's a wiring diagram somewhere here. I'm new, so I haven't learned all the ins and outs to posting links.

 

[Harleyboy1]

Thanks the help is appreciated I'll keep an eye out