This might be a good option for you, a manual cable actuator. I am using this on my tacoma that i swapped an elocker 80 series axle into and didn't want to deal with figuring out how to hook it up electronically. I was a little skeptical. but its super simple and best of all RELIABLE. I've been running it for years and its never failed, and I am wondering why more are not using this setup. Yes, it takes a little bit of custom work to route the cable and mount it in the cab, but nothing crazy. The guy is really proud of it, the cost is definitely inflated, but hey it eliminates the need for a bunch of other expensive parts.