1989 Ford Bronco Owner's Manual - Page 70
1989 Ford Bronco Manual
Page 70 highlights
Driver Controls Navigation system/SYNC hands free control features (if equipped) control briefly until the Press icon appears on the voice Navigation display to use the voice command feature. Press hold to activate phone mode or answer a phone call. Press and to exit phone mode or end a call. For further information on the Navigation system/SYNC system, refer to the Navigation System and SYNC supplements. UPFITTER CONTROLS (IF EQUIPPED) Your vehicle may be equipped with the Upfitter option package which will provide four switches, mounted in the center of the instrument panel, labeled AUX 1, AUX 2, AUX 3 and AUX 4. These switches will only operate while the ignition is in the on position, whether the engine is running or not. It is, however, recommended that the engine remain running to maintain battery charge when using the Upfitter switches for extended duration or higher current draws. (This is even more important for vehicles with diesel engines since the glow plugs are also draining battery power when the ignition key is in the on position.) When switched on by the operator they provide 10 amps, 15 amps or 30 amps of electrical battery power for a variety of personal or commercial uses. If your vehicle is equipped with this option, a relay/fuse kit will be included. This kit contains the required fuses and relays that need to be installed into the Power Distribution Box located under the hood. Refer to the instruction sketch included in the kit and Fuses and Relays in the Roadside Emergencies chapter. See your authorized dealer for service. There will also be one power lead for each switch found as a blunt-cut and sealed wire located in the underhood cowl shield above the engine block PCM. 70 2010 Econoline (eco) Owners Guide, 3rd Printing USA (fus)