Its strange because I had aftermarket steering wheel on my car and the hicas light would come on when id go over 100kph roughly and didnt go out till I turnd the car off then once I put the bar in the light was on all the time when I put the bar in I also put coilovers tie rods lower control arms ect so it went straight on a tow truck to pedders and the aligned it all for me and they fould the no power steer problem and they told me it was the pump or electrical I drove around for a couple days before I checked the fluid to find it was bone dry I topped it up had power steering again but driving it with no fluid must had wrecked the pump so when I changed it everything was fine just the hicas light and when I put the gtr dash in I just took the globe out im not sure if having a microtech or any aftermarket computer makes a differance