I removed the dash plate. Using a dremal the first thing I did was remove enough of the sub dash behind the dash plate. I then took the alky control that set between the dash and the radio and removed the two screws holding the control box together. Opened the box then removed the plate that held the dial knob, test button and LED lamp. Remove the nuts holding the dial control and test button from the plate. I now can remove the LED and the little plastic lamp holder. Install the control, LED and test button in the new dash plate. Now take your dermal and open up the dash trim enough for the wires to relax behind the dash. Reinstall dash trim now slip the wires through the trim. Remove the tape cover and continue to guide the wires through until the new plate mates with the dash trim.