Your vehicle is not designed to be dinghy towed (with 4 wheels on the ground) behind a motor home.
NOTICE
To avoid serious damage to your vehicle
Do not tow your vehicle with four wheels on the ground.
Installation
INSTALLATION
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the RH and LH sides.
The procedure listed below is for the LH side.
When installing the clip, heat the vehicle body and clip using a heat
light.
Standard:
...
Speed Signal Circuit
DESCRIPTION
The vehicle speed signal consists of pulses sent to the combination meter assembly
from the master cylinder solenoid (skid control ECU)*1 or skid control ECU (brake
actuator assembly)*2.
*1: for 4WD
*2: for 2WD
WIRING DIAGRA ...