holding tank sensors

[jimburr1]

i have a 2005 national rv seabreeze , model 1321, ford chassis . can any one tell me where the holding tank sensors are located. i don't want to tear any thing apart that i don't have to. i need to get to my tank sensors to make sure they have a good ground. both the black and gray tanks are reading empty when i know they are not. the jrv company tested the circuit board and said its ok. thanks for any help. jimburr.

[puttin]

Before you do any tearing apart- is the propane also showing empty, and any other tank measurements at your panel? Check the ground for all these if that's the case. You'll know what to look for if you get under your rig and find the sensor circuit. You'll see some screws with wires attached to each one- those are the probes, and they are probably ok...somewhere further upstream in that wire loom is where you should find a wire going to ground...either on the chassis or maybe up to the panel inside- I'm guessing that wire is loose, broken or otherwise disconnected.