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CONFIDENTIAL TRADE SECRETS – DO NOT DISCLOSE.
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STEP 7: MOUNT THE SPOTTER SWITCHES (RS-4902 KIT)
When pressed by the vehicle spotter, a tone alerts the driver that it is safe to back up the vehicle.
Typical mounting locations - One switch mounted to the overhead panel near the rear doors allowing a clear sight
line out the rear window, and one switch mounted on the outside of the vehicle on the left or right rear corner per
customer’s preference.
Typical routing for the switch wiring is from the RS-4000 On-Board Computer out of the forward cab through the
overhead panel of the patient compartment to the interior switch location. Continue routing to the rear door
header, across to the corner on the driver or passenger side, then down to the exterior switch location.
1.
Remove one of the interior light assemblies or access panels nearest the desired interior switch location
in the patient compartment overhead to check for clearance prior to drilling the 5/8” diameter hole for
the interior switch and to make the wiring connections.
2.
After making connections to the switch, insert the switch into the hole and tighten the nut to hold the
switch in place.
3.
Remove the tail light assembly to check for clearance prior to drilling the 5/8” diameter hole and to make
wiring connections to the exterior switch. *Note: The switch mounts from the outside.
4.
Some installations of the exterior switch leave very little room between the switch contacts and the metal
body. Applying RTV Silicone to cover the switch contacts will help prevent them from contacting the body
and causing a short circuit. Electrical tape alone may not be sufficient due to excessive vibration.
NOTE:
If spotter switches are not going to be installed, connect the spotter wire to the reverse input wire to
prevent unwanted spotter violations from occurring.
NOTE:
Effort should be made to have the switches placed in the same relative position throughout the entire
fleet of similar vehicle types to assist the crew in locating them.
