my car is 1989 maxima with bose system. It has power switch and suspension switch on the bottom of the main dash. So when i want replace the hu, removing the dash is a hard work. There is no instruction in the clipton repair manual. But I did remove it. If anyone face the same problem, I took some photo about handling it. I want post the pics, but I do not know how to. If someone want them, contact me jiberlong@126.com.