What do you mean "I wouldn't expect a drawing"......................stand up for your rights man!. You paid a lot of money, and part of that money paid for a wiring diagram and an instruction sheet. Any company that sells electrical kits for any product is obligated to supply drawings and instructions. This HHB guy is the same guy that says things like:
I'll paraphrase.................."I've got your back" and "just want to treat you forks with the communication and respect you deserve", and "backed by HHB, and you know that means it's the goof stuff, with even better tech support and customer service".
Lots of patronizing chit chat from him......................... but he sends you to a forum for technical help