12 Preparing the Installation TM9100 Installation Guide© Tait Electronics Limited August 2005■ self-drilling screws and washers■ power cable with DC connector■ fuses■ in-line fuse holders■ receptacles for a remote speaker (remote speaker not included)■ antenna connector.Refer to the following section, “Installation Kit Options”.Warning!! Danger of fire. The radio’s protection mechanisms relyon the correct fuses on both the negative and positivepower supply leads being present. Failure to fit thecorrect fuses may result in fire or damage to the radio.The correct fuse types are:■ 40W/50W radios: 20A fuses (Tait IPN 365-00010-81)■ 25W radios: 10A fuses (Tait IPN 365-00010-80).Installation KitOptionsInstallation kits are also available without the U-bracket included and withother antenna connector options. Other cradle mounting arrangements arealso available. Consult your nearest Tait Dealer or Customer ServiceOrganization for more information.1.4 Choosing an Installation ConfigurationThe radio allows for different installation configurations for vehicles withrespect to ignition signal and standby current. For special configurations fordesktop and remote site installations, refer to the service manual.The installation configurations described below are based on the followinghardware link configuration:■ hardware link 1 (+13.8V battery power sense): fitted■ hardware link 2 (ignition sense): fittedFor more information on the hardware links, refer to the service manual.Direct Connection tothe Power SourceThe radio’s power cable must always be connected directly to the powersource (battery).Important Although it is possible to connect the radio in line with thevehicle ignition, this is not recommended, as it may drawtoo much current and damage the vehicle wiring andsteering column or ignition switch. This may also cause thesupply voltage of the radio to drop below the specified level.The radio can always be turned on and off using the on/off button,independent of the ignition signal.Installation withoutIgnition SignalConnect the power cable directly to the power source as described in“Connecting the Power Cable to the Power Source” on page 19.