Hi all, new to the forum. I have a 1981 Hilux with 80,000 original miles 4WD version. Everything works, including factory air. Plan on doing some off roading, and would like to carry a spare control module. If a problem arises, would just like to slap on new module. Problem, having trouble finding an adequate replacement. Would greatly appreciate recommendations for an off the shelf unit that would work. Ideas? Thanks Jergen