I didn't have any luck finding one online. I would say that the problem is the fan switch if you having problems overheating due to the fan not coming on. Or is just you don't think the temp guage isn't giving you an accurate reading? I could take a picture of the diagrams in my Bently; however, I would not be able to post them due my computer deciding to stop working and not turn on. I'm having to use my Nintendo Wii to use "those internets" until I fix it.