Austin's E-Lock Mod:
E-Lock Locked in 2WD & 4HI & 4LO
Nissan Frontier 4x4 with OEM Electronic Locking Differential
Page 1 Page 2 Page 3 Page 4 Page 5 Wiring Diagram
If you have any questions, direct them to Austin on Nissan Titan Forum.
Original Nissan Titan E-Lock Mod
This
modification was originally performed on my Nissan Titan. I've adapted it
to the Frontier
by using the factory service manual for the 2005 Frontier, revision November
2004.
I've received reports from several Frontier owners that this mod works
perfectly.
Here's a complete wiring diagram for the Frontier:

Page 1 Page 2 Page 3 Page 4 Page 5 Wiring Diagram
If you have any questions, direct them to Austin on Nissan Titan Forum.