User`s manual
LTO
LTO
TM
Installation Instructions
from all electrical items in the vehicle, including:
a). The CD player or other audio source unit, which may require a code number to reactivate it. Do you know the code?
b). The security system, which may trigger an alarm from its back-up battery. Do you know how to override the alarm
system?
c). Memory modules, which may suffer memory loss if disconnected for too long.
If you have any doubts, you should seek professional assistance.
You will find a Power Input terminal block at the far end of the side panel. The green terminal block can be unplugged
from the main unit - simply grip it with your fingers on each side and pull (unplugging it can ease the wiring job if screwdriver
access to the terminal block on the panel is difficult). There are three connections to be made:
+12V
The terminal marked +12V should be connected to a permanent (i.e. not ignition switched) positive 12 Volt supply from
the vehicle battery.
GND
The terminal marked GND (Ground) should be connected to a cable which is terminated to the vehicle chassis.
Ensure that the point where this cable attaches to the vehicle chassis provides good electrical contact. It may be ne-
cessary to rub away paintwork to expose the metal at this point - in this case, after making a firm screw connection of
the ground cable to the chassis, paint over the terminal point to protect the metal from corrosion.
To avoid noise problems, ensure that this point on the vehicle chassis measures as a true ground reference. You will
need a multimeter to check that there is no (or very minimal) resistance (in ohms) between the battery negative post
and the point you have chosen on the chassis.
If drilling a new ground point, check that there is nothing behind the panel you are about to drill, such as the fuel tank!
Where a ground point already exists (for an existing power amplifier, for example) it is generally best practice to ground
the UCS PRO and any other system components to this same point on the vehicle chassis (a practice known as Star
Grounding). This helps ensure that the ground reference is the same for all components, thus avoiding the chance of
automotive noise.