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Secure the wiring with cable clamps or adhesive tape. To protect the wiring, 
wrap adhesive tape around them where they lie against metal parts. To avoid 
short-circuiting,  cover  all  disconnected  lead  with  insulating  tape.  There  is  a 
possibility of short-circuiting if the leads are not insulated.
Route and secure all wiring so it cannot touch any moving parts, such as the 
gear lever and handbrake. Do not route wiring in places that get hot, such as 
near the heater outlet. If the insulation of the wiring melts or gets torn, there is 
a danger of the wiring short circuiting to the vehicle’s body.
Don’t  pass  the  yellow  lead  through  a  hole  into  the  engine  compartment    to 
connect to the battery. This will damage the lead’s insulation and cause a very 
dangerous short. 
Do  not  shorten  any  leads,  if  you  do,  the  protection  circuit  may  fail  to  work 
when it should. 
Never  feed  power  to  other  equipment  by  cutting  the  insulation  of  the  power 
supply lead of the unit and tapping into the lead. The current capacity of the 
lead will be exceeded, causing overheating. 
Since a unique audio I/C circuit is employed, never wire so the speaker leads 
are directly grounded or the left and right - speaker leads are common. 
When  this  product’s  source  is  switched  ON,  a  control  signal  is  outputted 
through the orange lead. Connect to an external power amp’s system remote 
control or the car’s Auto-antenna relay control terminal (max. 300mA 12V DC). 
If  the  car  features  a  glass  antenna,  connect  to  the  antenna  booster  power 
supply terminal.
When an external power amp is being used with this system, do not connect 
the  orange  lead  to  the  amp’s  power  terminal.  Such  connection  could  cause 
excessive current drain and a major malfunction. Refer to the relevant owner’s 
manual for details on connecting the power amp and other units, then make 
the connections correctly. 
Do not block any vents or heater panels, Blocking them will cause heat to build 
up and may result in fire. 
If noise is still experienced when the motor of the vehicle accelerates, a choke 
should be placed in line with the power to the unit. The installation company 
will know what is required.
When replacing the fuse(s) the replacement must be of the same amperage 
as shown on the fuse holder. Never replace a fuse with another of a different 
value. If the fuse blows again please contact your instsallation company. 
Double check that all wiring and connections are correct before re-connecting 
the battery and turning on the unit.
After completing the installation and before operating the unit, reconnect the 
battery, then press the (RES) button with a pointed object, such as a ball-point 
pen to set to unit to it’s initial status. After pushing the button, wait a few sec-
onds for the red light to flash.

SAFETY PRECAUTIONS

Summary of Contents for BV7254

Page 1: ......

Page 2: ...gative speaker terminal Never connect the negative speaker leads to chassis ground This unit is only designed for use with 4 speakers Do not combine outputs for use with 2 speakers Do not ground negat...

Page 3: ...gh the orange lead Connect to an external power amp s system remote control or the car s Auto antenna relay control terminal max 300mA 12V DC If the car features a glass antenna connect to the antenna...

Page 4: ...of installation technicians We strongly recommend that this unit should be professionally installed by a VAT registered installer this is a require ment to validate the warranty IMPORTANT Remove the...

Page 5: ...io into dashboard Then apply the trim frame to outside of radio 4 Support radio using rear mounting bolt and steel bar not included DIN Front Mount INSTALLATION WARNING Disconnect negative battery ter...

Page 6: ...the screw holes at the sides of the unit and the holes of the existing vehicle mounting bracket 1 Remove the hooks on both sides 2 Aligh the screw holes of the mounting bracket supplied with the car a...

Page 7: ...t is designed for use with four 4 speakers with impedance between 4 Ohms to 8 Ohms 2 An Impedance load of less than 4 Ohms could damage the unit 3 Never bridge or combine the speaker wire outputs When...

Page 8: ...Sequence of equaliser setting will be EQ OFF POP ROCK CLASSIC G Beep On off Press the SEL Button until the display shows BEEP ON then use the VOL Button to turn the beep sound off The word BEEP OFF wi...

Page 9: ...ns in that FM band will be scanned press the button in AM mode and scan the band stations of that AM Band 4 LIST button In radio mode press the LIST button to go to the preset stations list Press agai...

Page 10: ...The unit will choose the strongest FM signal for the selected station so that you do not have to re tune the stations when driving between different transmitter coverage areas When AF is on it means R...

Page 11: ...3 TYPE button Switch the current playback eg Music to another type eg Video by pressing the TYPE button The type switch will depend upon the contents in the USB SD device 4 HOME button Press the HOME...

Page 12: ...a 3 5mm stereo jack on the front panel of the unit Press the Mode button to choose AUX Connect any portable audio device such as a MP3 player to unit Use the volume control to adjust volume 2 RCA Out...

Page 13: ...move the cover from the back of the remote control 2 Insert a CR 2025 Lithium battery 3 Insert the battery holder into the back of the remote control 1 Power On off 2 Mode Switch Button 3 Stop Playbac...

Page 14: ...wer Unit stops responding or shows error in display Unable to receive radio stations Poor effect on receiving a station CAUSE SOLUTION Check whether the fuse is blown replace with fuse of proper value...

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