iFixit

Reconnect the following connectors back in their respective sockets on the logic board:

• Camera connector cable
• Inverter cable
• Left fan
• Display data cable

Do not reassemble the display to the lower case assembly just yet. The display can lay next to the laptop.

Connect the display data cable and the inverter cable connector back into their respective sockets on the original LCD assembly.

Use a spudger to re-seat the trackpad/keyboard ribbon cable connector to its socket on the logic board.

Carefully realign the upper case over the lower case.

Do not secure the upper case to the lower case just yet.

Connect an external USB mouse to your MacBook Pro.

Power up the MacBook Pro and boot into the OS.

Carefully lift the upper case and use a spudger to pry the trackpad/keyboard ribbon cable up off the logic board. Remove the upper case from the computer.

Use your external mouse to select the "Sleep" option from the Apple menu.

Make sure that the sleep light is pulsing before continuing.

Disconnect the display data cable and inverter cable from the original LCD panel.

Connect the display data cable and inverter to the high definition LCD panel.

Use a spudger to re-seat the trackpad/keyboard ribbon cable connector to its socket on the logic board.

This will wake the machine from sleep mode.

The MacBook Pro will now readjust itself to a resolution of 1920 x 1200!

The high definition resolution will be retained upon rebooting your MacBook Pro. However, if you reset your machine's PRAM/NVRAM, it will revert to standard definition, and you will need to redo the entire process!