1989 Ford f-150, standard 5 speed, 4.9 liter 6 cylinder, the problem is the high pressure fuel pump does not charge (get power) when the key is turn on, initially it was an intermittent prblem, the fuse link, EEC relay, Fuel pump relay, and the high pressure pump have been replaced, it ran fine for a month, then sat for three weeks, went out to use it the other day and it would not start. Now I have a hot wire from the battery to the high pressure pump and the pump runs and the truck will start. Is there something in the ignition switch or steering column that I am over looking?