Ford F250 will not start, No power to the fuse junction box Jun 14, 2017Ford F250 will not start, No power to the fuse junction box. The number #2 spade and wiring are going to the #45 10a fuse inside the junction block. The big spade in the middle of the relay will send power to the other fuses #49-#59 when the relay makes contact. Therefore the wire that goes to the #1 spade comes from the bcm. Fuses And Circuit Breaker Problems of Ford F-250 Fuses And Circuit Breaker Problems of Ford F-250 Ford F-250 owners have reported 11 problems related to fuses and circuit breaker (under the electrical system category). The most recently reported issues are listed below.