Roadmaster VR3 VR500CS-BT - Manual (Page 5)

Before You Install
Automotive audio equipment installations can be challenging at times, even to the most
experienced of installation technicians.
If you are not confident working with electrical wiring, removing and re-installing interior
panels, carpeting, dashboards or other components of your vehicle, please call your dealer
in order to have the unit professionally installed.
B. Insert the keys supplied with the old unit
into both sides of the old unit as shown
in figure below until they click. Push keys
apart and pull to remove the old unit from
the dashboard.
DIN Front Mount Style
DO NOT DISCONNECT WIRES AT THIS TIME!
A. Remove the outer trim frame.
1. Remove the Old Unit from the Dashboard
A. While the old unit is playing, discon-
nect the wires from one speaker.
B. Take a length of masking tape and
fold it around the wire so it forms a
flag.
C. On the masking tape mark the polar-
ity of the speaker wires (+ & - ), as
well as left or right, and front or rear.
D. Double check that you marked the
first speaker correctly by checking
that the speaker wires are the same
at the head unit.
E. Repeat this procedure for all of the
speakers.
F. Mark the power, ground, and any oth-
er wires also.
2. Mark Polarity of the Speaker Wires
Marking the polarity of the speaker wires will make it easier to connect the existing
speakers to the Head Unit.
Consult wiring diagram of existing head unit before disconnecting any wires. If a
wiring diagram is not available contact the manufacturer.
4
IMPORTANT!
BEFORE THE FINAL INSTALLATION OF THE HEAD UNIT, CONNECT THE WIRING
TEMPORARILY, MAKING SURE THE UNIT AND THE SYSTEM WORK PROPERLY.