i

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LEVELING AND STABILIZATION

7. Once the appropriate wire is located, determine the type of signal by using a volt-ohm meter while
engaging the park brake. If a positive signal is present, the use of a relay is required see (Fig 3). Next,
splice the blue park brake wire labeled PKBK from the control unit into the signal wire.

NOTE: Many class “A” motor home chassis with the Level Best system are equipped with an automatically-
applied park brake system. These systems automatically apply the parking brake when the
transmission is shifted into park. Identify the park brake signal wire in the chassis harness. This
wire will carry a positive 12Vor ground signal. A signal wire can generally be found in one of four
locations:

The steering column just below the head and rim at the upper adjustment point or at the base just
above the floor line.

B. The front bulkhead wiring connector. This connector is located on the driver's side of the vehicle
and can be accessed inside the vehicle under the dash or at the exterior under the hood.

C. Atthe slave cylinder actuator of the park brake.

D. And possibly in the transmission wiring harness.

Once the appropriate wire is located, determine the type of signal by using a volt-ohm meter while

engaging the park brake. If a positive signal is present, the use of a relay is required see (Fig. 3).

Relay Wiring, Brake
Circuit 12 volt positive ON
a Ground

Relay required when park 87 (typical)
brake circuit does not
utilize a ground signal for Tap from

brake application. positive brake 86 7 85 ——()
switch circuit

Bosch Mini Relay |

Part # 0 332 209 150 or
equivalent

30

A

Wire to be hot with
ignition on and brake

eg Level Best
not applied. Park Brake Wire

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9. Atthe pump manifold end of the multi wire harness, the wire labeled (TD 1) is for the jack leg position
switches. The new control requires that the leg position switches be wired in series see (Fig. 4).

Attach a yellow 16 gauge wire to TD 1 at the pump manifold. Run this wire to the first jack leg
sensor and attach to one of the two sensor wires.
Attach another yellow wire to the remaining wire at the sensor and run this wire to the next jack
leg and sensor. Continue this process until all four sensors are connected.
At the last sensor attach the yellow wire to the remaining sensor wire and run the other end of the
yellow wire to the grounding bolt on the pump and connect with a 5/16” ring terminal.
On all Level Best Systems there is yellow 16 gauge wire attached to the switch lead with a heat shrink butt
connector (Fig. 4).
Check all wiring connections insure all connectors are fully inserted and locked. Reconnect battery cables,
ground first and test the system.

Butt connector —— : —— Butt connector

)
C
\
\
O )

Attach to
Grounding Bolt
on Pump

Butt connector , Butt connector

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Control Panel Installation

One method of installing the control panel uses a mounting bracket to install it below the driver's
instrument panel. If space is available, flush mounting the control panel into the vehicle instrument panel is
another option.

First, determine where the wires are to be routed.

Look for any existing holes that can be used to route the control panel wiring from the pump
manifold to the control panel location.

If no hole is found, drill a 1%" hole through the fire wall near the selected installation site.
Route the wire through the hole to the control panel location.

Bracket Mount Application

Select a position along the lower edge of the dash that provides adequate surface area for mounting the
bracket and allows convenient system operation (Fig 5).
A. Route the multi-wire cable through the opening in the bracket and insert the connector into the
receptacle on the back of the control panel shown in (Fig 6).
B. Insert the control panel into the bracket and attach it with four %" sheet metal screws (included in
the panel mounting kit).

_________—GA

su
HS

Made in The U.S.A.

ca

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Flush Panel Mount Application
(Not shown)
Inspect the location for flush mounting the control panel and insure that there is adequate space for the box
portion of the control panel and the multi-wire cable connections. Using the touch pad (control panel) as
a template lay out and cut the opening. Route multi-wire cable through the opening in the dash and insert
the connectors into the receptacles on the back of the control panel. The control panel should fit snugly into
this opening. Remember, it’s easier to cut the opening too small and enlarge it to fit rather than to cut it too
large and have to fill the opening back in.

NOTE: When the control panel has been installed and the wires have been routed, seal any holes that may
have been drilled from the interior to the exterior of the vehicle with a silicone sealant.

Completing the Wiring Connections

1. Check that all system ground harness connections are firmly attached.
2. The final connection is the 8 ft. red #4 cable from the pump motor’s solenoid to the positive terminal

on the chassis battery

As a supplier of components to the RV industry, safety, education and customer satisfaction are our primary concerns. Should you have
any questions, please do not hesitate to contact us at 432-LIPPERT (432-547-7378) or by email at [email protected]. Self-help tips,
technical documents, product videos and a training class schedule are available at lippert.com or by downloading the LippertNOW app.

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