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CHAPTER 6 - INSTALLATION GUIDE
1. Please refer to the "Troubleshooting and Installation Tips"
section in Chapter 7 for details on avoiding installation issues.
2. The installation consists of mounting the display inside the RV,
cutting and fastening the senders to the sides of the holding
tanks, connecting wiring, and programming the display. When
wiring DO NOT use spade connectors to join wires, only use
crimp on butt connectors or solder the wires together.
3. Mount the display by cutting a hole in the wall 3" wide by 1
7/8" high and bringing the wiring out through the hole to
connect to the display panel connector.
4. Connect the wiring according to the following table. It is
easier to connect the wiring to the display connector first,
and then plug the connector into the display panel. The
sender needs to be grounded to a single ground wire from
the display. Make sure that the system ground is connected
to the breaker panel ground.
Wire Color
Red 18 gauge
Black 18 gauge
Blue 18 gauge
Green 18 gauge
5. Determine where to mount the senders on the tanks. They
will need to have a flat area on the side of the tank large
enough so the whole width of the sender is in contact with
the side of the tank, all the way from the top to the bottom
of the tank. Make sure that any metal is at least an inch away
from the sender. Clean the area well so that there is no dust,
grease, oil, water, etc., that would prevent the adhesive on the
sender from sticking.
6. Measure the height of the tank to determine how long the
senders should be. For tanks less than 13" tall, follow step 6.
For tanks greater than 13" tall, follow step 7.
7. For tanks less than 13" tall, a single sender is used. For tanks
less than 7" tall a 710JS sender should be used. The sender
ends should be 1/4" to 3/4" away from the top and bottom of
the tank, to allow for the thickness of the tank top and bottom
and any bows in them (see the diagrams). The senders are
calibrated to account for this distance from the bottom of
the tank. The ES sender is cut to the nearest even 1.5 inch
709-LL Manual
(NEW OEM INSTALLATIONS ONLY)
Function
+12V power input to monitor
Ground
Tank senders
Not used
Page 13
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