Hi guys, in need of some help here. I recently took on a project for a buddy on a f650 I am kind of regretting. The first problem was a wiper inop situation. They told me that a service tech from his business installed a new motor and multifunction switch to no avail. I checked fuses and a visual on connections and wiring all looked good, then applied power to the motor through the relay socket via a power probe an bingo wipers. However somewhere along the way now the engine will not crank, no power to the starter relay. 12.54 volts on batts and when voltage applied to relay engine cranks. When the key is turned on the dash lights and I here clicking and a motor running for a brief period turn to start and nothing. Any help on either issue would help. Thanks