1990 Jayco Designer Series

[Judy R.]

i am looking for an owners manual for a 1990 Jayco Designer Series 29 Jayswan. It is in very good shape & the battery keeps drawing down, looking for a drawing of the 12V system.
thank you

[Grumpy]

That won't be in any manual, nor will JAYCO have it since they only go back 20 years.

[RogerR]

Not sure what you mean on battery drawing down. If you leave it connected to the trailer wires there is probably a CO/LP monitor that uses a couple amps a day. Some refrigerators also have a draw. Other functions might draw all the time include radio, lights, water pump if backflow valve is bad, furnace fan at night is a hog, light bulbs in those older models drew 1/2 to 1 amp per hour.
Most important may be that your battery is dying and won't hold a charge in any case.
There are several youtubes on battery maintenance and problems. Check the search button above.