Navistar Electrical Systems CV
Integration Guide
Page 67 of 84
Revision Date: 9/12/2019
Electrical Components (non-safety system related)
When relocating electrical components careful consideration needs to be given as to
environmental conditions of the new location. Such things such as moisture, temperature,
electromagnetic interference, signal interference/impediment.
9.1. Under-hood/Vehicle:
When relocating components outside the passenger compartment of the vehicle steps to
protect the device/component from high heat sources such exhaust system, engine block,
cooling system and their associated parts/sub-assemblies.
Consideration to the possibility of water/moisture intrusion must also be given, many outside
areas of the vehicle are often subject to water splash and/or spray so the components must
be protected by a water tight housing with proper weather protected connector and seal
assemblies. Consideration to all moving parts/components is required when selecting a new
location
9.2. Under-dash:
Components being considered for relocation inside of the passenger component need to have
the same environmental considerations given as to the selected location. Components to be
mounted under dash/above the driver/operator foot controls must secured so not impose a
risk of dislodging and impeding the operation of any of the vehicles foot controls. Under dash
mounting must also not impede the operation of any of the vehicles sub-systems.
9.3. Doors:
When relocating components within the doors consideration to moving parts and environment.
When considering a new location for component/s be aware of the travel path of the moving
window and its components. Also, being sure not to impact any of the door latching/release
systems. Additionally, reinstallation of the door
’s water deflection system/shields is required
to prevent water intrusion inside the vehicle. Electrical system components should never be
relocated to the
“wet” side of the water deflection system. To prevent water intrusion into
components inside of the door, connector interfaces should always be postitioned in a
downward orientation. It is also suggested that wire harnesses be routed with a drip loop near
or at the device whenever possible.
9.4. Under Seats:
When relocating components under or near the seats consideration shall be taken regarding
all moving parts and their subsequent environments. When considering a new location for
component/s be aware of the travel path of the moving seat and its components. Also, being
sure not to impact any of the seat
’s latching/release systems. Many front driver and
passenger seats have integrated safety components that too must not be interfered with as
well. Consideration to the seat belt system and its moving and latching system must also be
given.
9.5. Rear Stowage Areas:
When relocating components under or near the seats consideration shall be taken regarding
all moving parts and their subsequent environments. Additionally, once again environment
must consider when mounting or locating a device in this area to the
“drip zone” of
water/moisture dripping off the rear stowage area enclosure. Be sure that when the enclosure
