To begin with i type like crap.
Ivr got a 93 chev k1500 w/t 4.3 5 speed just bought with 94k miles when i bought the front axle didnt engage but the hi and lo of the 4x4 did grind a little before switching. I was told since the fuse wasnt blown to replace the actuator and switch but still not engaging.i was out ther today and still no power to fuse please help and again sorry about grammer.

 

The 4wd fuse gets power via the ignition switch in the ON position. The power supply to the ignition switch comes from a fusible link at the battery/power distribution center (passenger side firewall in engine bay). If there’s no power to the 4wd fuse with the key on, its most likely a fault with the ignition switch, but you’ll have to trace the circuit for power to know for sure.