I have read the past posts and suggestions about this problem.
I have a 2005 4.8 TI. I've put new earth straps on and have disconnected the battery a couple of times. It sometimes works but after a while the light comes one and I am unable to transfer fuel.
Is this likely to perhaps also be a fuse, and if so can anyone tell me which fuse it is?
Has anyone thought of placing a fuel transfer pump between the main and sub??

I would appreciate any assistance before I take the truck to an auto elec.....thanks....LA