Originally Posted by Terier
I keep both tanks closed and will usually connect the sewer line while setting up camp. I have waited to connect the sewer hose a couple of time but there have also been a time or two that I needed to move the TT closer to the sewer dump. My grey tank tends to fill up really fast so I like to empty it as needed during my stay so having the hose connected is easier for me.
I always hook up the hose as well. Valves closed until I need to dump them.
I always fill a partially full black tank with water before dumping it.
When the "full" light comes on you still have several gallons of space available.
The red wire is the FULL light.
NOTE - One light means EMPTY; the 1/3 light means NOT EMPTY; the 2/3 light means about 1/2 full; the FULL means about "7/8 full".
NEVER dump unless the 2/3 light is on (1/2 tank) and it is always better to wait till or fill to full before dumping black.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW