B350 1 Ton Van V8-5.9L VIN Z (1992)
The following is excerpted from the owners manual of new DaimlerChrysler products:
"INSTALLATION OF RADIO TRANSMITTING EQUIPMENT
Special design considerations are incorporated into this vehicle's electronic system to provide immunity to radio frequency signals. Mobile two-way
radio and telephone equipment must be installed properly by trained personnel. The following must be observed during installation.
The positive power connection should be made directly to the battery and fused as close to the battery as possible. The negative power connection should
be made to body sheet metal adjacent to the negative battery connection. This connection should not be fused.
Antennas for two-way radios should be mounted on the roof or the rear area of the vehicle. Care should be used in mounting antennas with magnet bases.
Magnets may affect the accuracy or operation of the compass on vehicles so equipped.
The antenna cable should be as short as practical and routed away from the vehicle wiring when possible. Use only fully shielded coaxial cable.
Carefully match the antenna and cable to the radio to ensure a low Standing Wave Ratio (SWR).
Mobile radio equipment with output power greater than normal may require special precautions.
All installations should be checked for possible interference between the communications equipment and the vehicle's electronic systems. A Technical
Service Bulletin (TSB) is available for detailed assistance."
The owner's first line of contact regarding vehicle problems is the dealer. The literature supplied with each vehicle lists the steps to be taken in the event
the dealer is unable to resolve the problem. To assist in properly installing communications equipment in DaimlerChrysler vehicles, the following
information is provided. Always use good construction practices (see The ARRL Handbook or other standard reference works).
The information contained in this guide has been prepared for use by persons installing two-way radio equipment (transmitters and receivers) in vehicles.
It has been prepared in accordance with current engineering principles and generally accepted practices, using the best information available at the time
of publication. It is not possible to cover all of the possible installations of two-way radio equipment in this guide. Accordingly, DaimlerChrysler
Corporation cannot be held responsible for incidental or consequent damages arising out of the use of the information contained herein. The
responsibility for installations and modifications is the sole responsibility of the customer.
The installation recommendations presented here are intended to supplement the radio manufacturer's instructions. Test the entire installation for
anomalies, especially drivetrain and brake control before extensive driving.
CONTROLS Mount the transceiver to a solid surface. If you use screws through the floor pan, put body sealer over the underbody projections.
(Stamped acorn nuts, filled with sealer are available at most body shops for this purpose.) This will keep moisture out of the carpet and insulation,
and will forestall rust in this area. Watch out for wire harnesses routed under carpet and behind instrument panel.
If you mount the radio under the instrument panel, be sure that there is no interference with proper operation of the foot controls. Mount the
control head or front panel (especially the microphone cable) so that it is clear of the steering wheel and column controls and passenger airbag. If
the unit is heavy, extra bracing may be needed for stability. Newer vehicles have more structure and energy absorbing materials in the knee
blocker (the lower part of the Instrument Panel).
For one-piece transceivers, if ignition switch control is desired, it is good practice to use a power relay to avoid overloading the ignition switch,
and to maintain the advantages of direct battery feed.
Try the installation out before you start drilling holes.
POWER WIRING To reduce the hazard of working on the vehicle, disconnect the battery NEGATIVE before beginning work. Note that some
components may lose short-term memory (e.g.: radio presets) after a protracted time without battery power.