To answer your question, at my request, they sent me extra liftgate sections of the wiring harness that I had planned to use. But before I went through all that I plugged in the new controller to see if it was going to make the liftgate work. It didn't. So, from there I pursued a refund, which took several months, but I did receive one. The difficulty came from Autoease being a PayPal vendor. I didn't realize this when I made the purchase. As a result, I was dealing with two credit card companies instead of one, making a refund complicated. When Autoease and my credit card company couldn't make the refund work I submitted a dispute. My initial dispute was dropped because of PayPal being in the middle. In the end, it was only because I had an email from Autoease stating that they would give me a refund that the my credit card company reopened the dispute and pursued it to the end. Consequently, I can't endorse the product. I spent the bulk of three weeks on this installation and troubleshooting for weeks beyond that, with no payoff in the end. They have issues to resolve and I have a box of parts.