Community Forums

holdren · 04-27-2015, 01:22 PM

How do you access the black tank sensors on a 2005 6342 Dolphin? Mine shows full all the time and tried all the tricks on here.

Clay L · 04-27-2015, 01:46 PM

I doubt if the sensors are the problem. The tank walls get crudded up with water bearing gunk and fool the sensors. Cleaning the tanks walls is difficult but usually fixes the problem temporarily.
I used a pressure washer with a homemade Tee on the end of the hose and washed the sides of my black tank using the toilet for access. That worked for a while but the walls would gunk up again after a while. I ended up just marking a calendar and dumping every ten days and quit worrying about it.

By the way I have a non-contact sensor system that reads through the tank wall.

Belgian · 04-30-2015, 08:03 PM

The black tank sensors are behind the black plastic cover in the curbside bay behind the rear tires.

try adding automatic dishwasher soap and half a tank of water and driving around. That's what cured our problems with false readings

holdren · 09-09-2015, 11:42 AM

JRV Products sent me a new circuit board for the monitor panel and every thing works great now. Tried the cleaning and that did not work.

Civdiv99 · 09-09-2015, 05:53 PM

posting this only since I see you have same dolphin model I do...

I went to the Garnet See Level system. The monitor fits nicely right at the top of your control panel area, the wires that were already run for the goofy light level system work fine for the See Level system (capacitive system, no more bum readings).

Apply the new sensor strips to outside of the tank, transfer the wires from the goofy lights to the new control panel, and whoo hoo.

One of the best mods I have done and definitely the easiest (once you are comfy removing the pretty covers in the compartments).

I went with 709 series.
https://www.garnetinstruments.com/rv-shop/products/

holdren · 09-09-2015, 07:25 PM

The new circuit board was 95.00 to my door. Had not had a problem in 8 years. It was also plug and play and took 10 minutes to install. They told me how to diagnose the problem also.
I did think about the sea level if this way didn't work.