My V30 tbi with dual tanks has a jumper wire in the fuel tank selector switch harness. I bought a new switch in place of the jumper and when I put it in it would stay on either tank. I have to hold the button on either left or right tank for the truck to stay running. If I let off the engine dies. Ive tried several switches, Im not sure what else could be the problem or if I have the wrong switch. It is switching from either tanks and reading correctly. I cant drive while holding the switch and tring to shift gears and stear with only two hands.lol Any suggestions?