Bought this kit instead of the cheaper after market boards on the internet because of the excellent description provided by Shortys and from Carrier. It arrived today, the instructions were excellent and the board is now installed and I have heat !!! I am so glad I paid the extra $$ and did the job right. Penny wise pound foolish is not in my vocabulary. The kit even included updated schematic labels and instructions to place on my furnace. If you can label wires and read instructions, you can install this board. Shortys is the only supplier I will use for my home HVAC repairs. Thank You for an excellent product and fair price.