If Heartland has these they don't give them out, citing "Proprietary Intellectual Property".
Everybody else who has needed these has had to just trace the wiring out, maybe using electronic wire tracers as a helping tool.
I remembered a recent posting that involved a black tank dropping, used the New and Improved forum advanced search function, and came up with the following thread. Be sure to read post #3:
I refer you to the charts on pages 67 and 75-76 of this document from our library for fastener torque values: https://manuals.heartlandowners.org/manuals/Exterior/Axle%20Suspension%20Brakes/Dexter/Dexter%20Axle,%20Brake%20-%20600-8K_Complete_Service_Manual_3-13.pdf
The Dexter values should be...
Just to prevent confusion on a thread about an AC power breaker box, the electric component of all the slideout systems is powered by 12 volts DC. These slideouts mostly have 120 VAC outlets within them.
Maybe the operator's and service manuals can help you:
The Heartland Service department should be able to supply you with a couch manufacturer name for your build (have VIN of RV for identification).
Any possibility your slideout floor wood is (outside rainwater damage) rotted out?? This is a somewhat common problem posted on this forum.
You might want to consider an ARP RV ammonia refrigerator electronic protection device to protect your cooling unit investment and give it an even longer life. It cuts off the boiler when it overheats due to the RV being out of level when parked temporarily (rest/lunch stops), or on mountain...
Once you get access to the valve, you can pull on the valve shaft away from the pipe to open the valve and do your draining. If you can't fix the valve soon, you can put an external valve on the sewer water outlet fitting. The external valve is a valuable backup device to have if your main...
Maybe you want to add a thick 1/2 inch?) outdoor rated piece of plywood under the tank with strap supports. That's what my fresh water tank had originally. You might want to drill a 1/2 inch hole at the center of the wood panel in case a little water somehow accumulates, to allow it to drain...
The generator is a "small engine" device where hard starting is a common problem. I would think that you would want the larger capacity of the house battery system for starting the generator over a small battery only dedicated to starting the generator.
Using the house batteries for generator...