 |
 |
|
|
08-23-2012, 05:39 PM
|
#1 |
 |
Using a relay for remote turn on
In my car stereo system that is currently in work, I have 2 amplifiers, a Bluetooth adapter, and a backup camera that all require the remote turn on coming from the head unit.
I couldn't find a definitive answer on the current draw for the remote turn on for the amplifiers but the general consensus is that its around 50mA. 2 amplifiers = 100mA. With the Bluetooth adapter once again, I am not entirely sure what the current draw is and am waiting for JVC customer service to get back to me. Finally, the backup camera that I plan on getting has a current draw of 300mA. So my JVC KW-AV50 remote output is only rated at 400mA... with only the amplifiers and the camera I am already approaching the limit of my head unit. My idea is to use the remote out on the HU to simply switch a relay that would in turn switch a direct 12V to the amp remote turn on's and the devices... Any thoughts? ideas? Also, I realize now that I need a power supply so that I can test these items on the bench in order to determine things like current draw! |
|
|
|
08-25-2012, 01:24 AM
|
#2 |
 
|
I may be wrong, but you can use the same remote for more than 2, 3 or 4 devices. It's only to turn them on/off. The power comes from a separete 12v wire from Battery for each device!
D.
__________________
.  My system may not blow your ears, but it will sweeten your senses.CLA 250, 4MATIC |
|
|
|
|
08-25-2012, 08:34 PM
|
#3 |
|
|
Nope, the Bluetooth adapter and camera each have a single 12v lead, no remote turn on...
|
|
|
|
|
08-25-2012, 08:46 PM
|
#4 |
ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
|
You could use a relay and connect the output of the HU to one side of the coil and the other side of the relay coil to ground. Then you take the common terminal of the relay and connect that to the ACC power wire of the radio harness and connect the normally open terminal of the relay to your three devices.
__________________
|
|
|
|
|
08-25-2012, 09:56 PM
|
#5 |
|
|
Any idea on a brand? part number?
|
|
|
|
|
08-25-2012, 10:02 PM
|
#6 | |
|
ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
|
Quote:
It will look like this: 
__________________
|
|
|
|
|
|
08-26-2012, 01:27 AM
|
#7 | |
|
|
Quote:
In my case the remote from HU turns on 3 amps and a CD charger. But each one has a separate 12V input for power. D.
__________________
. My system may not blow your ears, but it will sweeten your senses.CLA 250, 4MATIC |
|
|
|
|
 |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Projectors retrofit, black reflectors and dimmed front turn signals | my2sense | General Yaris / Vitz Discussion | 11 | 06-20-2012 11:39 AM |
| Quiet Turn Signals (Indicators) Relay Solutions? | LugNut | DIY / Maintenance / Service | 25 | 03-24-2012 10:02 PM |
| LED TURN SIGNAL PROBLEMS | joeljcruz86 | DIY / Maintenance / Service | 11 | 10-15-2011 01:14 PM |
| Are rear red turn signals planned for Yaris as well ? | 77W | General Yaris / Vitz Discussion | 38 | 02-22-2010 06:41 PM |
| Will local bay area members please stand up! | YarisSedan | California | 264 | 07-28-2009 11:53 PM |
Linear Mode
