For 1985 with mechanical pump on the engine the senders are switched at the dashboard and
default tank is
rear unless power is applied to the valve solenoid, correct?
Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.