My 1997 Land Yacht 33 has a panel labeled Solar Volt Meter with a model number TJN-2. It has two columns of red LEDs with voltage labels from 11 to 15.5, and one yellow LED labeled "Battery Solar Charging Status". It appears to read the voltage somewhere in the 12v
system, but not necessarily the output of the 5 Watt solar panel. There are two sets of leads on the back of the panel. One is labeled as going to a battery, and I think I have identified those leads at the battery. The other leads are identified as connecting to the solar panel. these disappear into the wall. An internet search does not produce any information about this panel. Any info about this panel would be greatly appreciated.