My keyless entry took me a while to install, and I never got around to installing the remote starter, but the wiring is pretty basic once you know what you're doing. Just take your time and do everything right. It took me a few hours to install keyless entry in mine but it was well worth it.
it wasn't hard for my keyless system...there is a nice amount of tho...but mine was fairly simple to install...if there are any problems you could always take it to a professional....and just say you did it >>