Switch/Wiring Question: Stereo Ignition Power Override - Defender Source
Defender Source  

Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions


Reply
 
Thread Tools
  #1  
Old June 27th, 2008, 02:53 AM
nimbusnic's Avatar
nimbusnic
Status: Offline
nimbusnic
Classic Saudi Arabian 110
Member
 
Join Date: Mar 2008
Location: Abilene, Texas, USA
Posts: 38
Switch/Wiring Question: Stereo Ignition Power Override

I have a sony head unit I would like to be able to power on even when the car's ignition is off. The unit remains powered when the car is off, in order to preserve its memory and in order to be able to load and eject discs but it will not power up and produce music while the ignition is in the off position. I would like to be able to temporarily flip a switch in order to override this feature when I want to listen to tunes when the car is off, but retain the function of powering down the stereo when the car is turned off in normal circumstances.

The stereo is fed by two power (12v+) wires, one being a constant power line from the battery and the other being ignition switched. If I have a simple Single-Pole-Single-Throw on/off switch, could I splice the constant battery power connection into two, running one wire to its usual position to the constant power lead on the head unit and the other wire through the switch and then into the wire on the head unit designated for ignition switched power (note that the original ignition switched wire would still be connected).

My only worry is that when the switch is activated, it would feed always-on 12v+ power into the car's ignition switched line. Will this hurt the car? Would I need to upgrade to a single-pole-double-throw switch where the ignition would be broken off the circuit when the always on 12v+ is applied?
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old June 29th, 2008, 10:55 AM
flippedrover's Avatar
flippedrover
Status: Offline
Tyler
'94 D-90
Member
 
Join Date: Dec 2003
Location: Ashburn,va
Posts: 3,124
How about turning the key to the ACC position? Thats what I do when I run the radio with the truck off.
__________________
Can't you feel 'em circlin' (closin'in) honey?
Can't you feel 'em swimmin' around?
You got fins to the left, fins to the right,
and you're the only bait in town.
You got fins to the left, fins to the right,
and you're the only girl in town.

Jimmy Buffett


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #3  
Old June 29th, 2008, 11:07 AM
newfD90's Avatar
newfD90
Status: Offline
Chance
93 NAS 110
Member
 
Join Date: Oct 2003
Location: Monument, Colorado
Posts: 1,359
Get a Single Pole Dual Throw (SPDT) switch and hook the center contact to the head unit, ignition power to either of the two outer terminals and battery power to the remaining outer terminal. You would then have three head unit power choices with the switch: Off (center), battery power or ignition power.
__________________
Chance

"Fossil Fuel Rapid Disposal Unit"
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old June 30th, 2008, 01:05 AM
nimbusnic's Avatar
nimbusnic
Status: Offline
nimbusnic
Classic Saudi Arabian 110
Member
 
Join Date: Mar 2008
Location: Abilene, Texas, USA
Posts: 38
Genius. I'll give it a go.

Thanks.
Reply With Quote
Reply

Lower Navigation
Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

Tags
stereo, switch, wiring

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
yet another stereo question - HELP imola Defender Technical Discussions 6 January 28th, 2008 09:20 PM
Stereo question oldscratchggf Defender Technical Discussions 4 December 19th, 2005 08:49 PM
Ford Duraspark replacement Ignition Control Module ICM jcasteel Defender Technical Discussions 0 June 7th, 2005 02:28 PM
Dumb ignition/door key question, did search first Neo Defender Technical Discussions 15 May 30th, 2005 07:10 PM
Ignition Power bjenk Defender Technical Discussions 9 November 22nd, 2004 07:20 PM


All times are GMT -5. The time now is 04:02 AM.


Copyright