Bus not turning on at all.
Hello everyone, I'm brand new posting here and just bought my bus a few days ago. This morning I attempted to start my bus only to hear a single click when turning the key and nothing else. No engine turning or anything of the like. The batteries are brand new, oil's fine, temperature is fine, but for some reason I just hear a single click and that's all I get. It's a 1987 blue bird if that's any help. I'm thinking it would have to be the starter but I needed to make sure. If anyone could tell me what's going on or any advice please let me know. Thank you all for inspiring me to buy my bus in the first place.