True 4hi can only be obtained mechanically like the Trooper , Rodeo etc without TOD , even a VX with TOD has to have a mechanical lock to put it into 4lo this also locks the gearbox and non of the electronic clutches are working while you are in 4lo its all locked in place - and you will create transmission wind up if you are not on soft or slippery surfaces - unlike TOD which doesn't wind up - so the easiest way to obtain 50/50 drive is to fool the transfer case into telling the transmission its in low box then the TOD locks itself to 50/50 - surely this has been thought of but i just have not read it - everyone seems intent on rewiring the TOD - to achieve something which it does already - all it needs it the lo box lever sensor rewiring
cheers
Steve