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Thread: Keep radio on while turning engine off Reply to Thread
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  Topic Review (Newest First)
05-03-2019 08:48 AM
Andy-WhiteTJ
Quote:
Originally Posted by 2jhanna View Post
Just think back in the day that the phone would ring while watching tv. You had to get out of the chair, walk to the hallway where the phone was tied to the wall with a cord, only to find out, it was a wrong number.

Meanwhile your tv program was still playing cause you had no pause or rewind button.
...and you had to get up to turn the channel or volume. I also remember having to wait for the TV tube to "warm up". I guess I'm showing my age.
05-03-2019 08:23 AM
dbbd1
Quote:
Originally Posted by 2jhanna View Post
Just think back in the day that the phone would ring while watching tv. You had to get out of the chair, walk to the hallway where the phone was tied to the wall with a cord, only to find out, it was a wrong number.
I thought that's what kids are for...
05-02-2019 01:54 PM
2jhanna
Quote:
Originally Posted by CSP View Post

There was a time when every US made car had the off position between Run and Accessory. We dealt with it without any long term, life threatening injuries.
Just think back in the day that the phone would ring while watching tv. You had to get out of the chair, walk to the hallway where the phone was tied to the wall with a cord, only to find out, it was a wrong number.

Meanwhile your tv program was still playing cause you had no pause or rewind button.
05-01-2019 08:10 AM
dbbd1 Can you tell that I'm just sitting on my a$$, drinking coffee and googling?

Here's what you want (maybe)...

https://www.the12volt.com/relays/relaydiagram30.html


3 relays, 2 diodes?
Even a caveman could do it.
05-01-2019 08:09 AM
dbbd1 Then, if you really want to get into it-

Go to the12volt.com. You could just build a latching relay, which would maintain power to the radio. Build one that will release with a grounding input. The latched relay will stay on, once you power up the jeep, until you open your door (which will be the ground input).

A whole world of ideas out there...
05-01-2019 07:58 AM
dbbd1 Or, the shortcut...

https://smile.amazon.com/Timer-Delay...gateway&sr=8-4
05-01-2019 07:56 AM
dbbd1 Probably more than what you want to get into but...

http://www.bowdenshobbycircuits.info...tm#relay_i.gif
04-30-2019 03:59 PM
Jonny Jeep A couple of other options for uninterrupted radio when turning ignition off, if no part of a song can be missed.

Option 1, You could use a momentary push to break switch in the fuse 11 (glove box) circuit. Pressing that would kill the engine and the ignition could be turned off once the tune ends.

Option 2, use a momentary push to make switch to maintain the Acc circuit when the ignition switch is turned from on to Acc. Engine would turn off as normal but radio would stay on till the key is turned back to the removal position.

Option 2 would be preferred as there wouldn't be an extra connection in the PDC coils circuit to potentially cause running problems.

Neither solution should cause problems with forgetting to switch off a circuit that could drain the battery as they both only require momentary acting switches.
04-30-2019 01:21 PM
CSP
Quote:
Originally Posted by Shark_13 View Post
^^exactly
Turn the key back, you'll miss like 1 second of music, oh the humanity.
^^^^^

There was a time when every US made car had the off position between Run and Accessory. We dealt with it without any long term, life threatening injuries.
04-30-2019 12:15 PM
Que89YJ
Quote:
Originally Posted by RenoF250 View Post
Generally the radio gets an always on 12V that is the main supply and then a switched 12V to turn it on. You can put a switch from the main 12 to the switched but I would add a diode on the vehicle side of the switched line so you do not back feed 12V into the ACC wire and power other things.

Yeah. You can also wire direct to the battery feed for the ignition signal and just turn it off using the old fashion on/off switch on the radio. No additional switch required. The radio powered off draws less than 10 ma.

That being said remember to carry jumper cables and your cell. in either case you will need them when you forget to switch it off.
04-29-2019 11:20 PM
Shark_13 ^^exactly
Turn the key back, you'll miss like 1 second of music, oh the humanity.
04-29-2019 09:26 PM
toximus Can you turn off the engine and rotate back to acc? With the stock radio you'd only loose a second of the song.

Aftermarket head units all seem to take longer to start up though.
04-29-2019 06:12 PM
mukluk
Quote:
Originally Posted by rkane31174 View Post
Thank you for your reply. I have two questions.
Would I need to do this for the speakers too?
Would the wires for the cigarette power outlet be a viable source for this?

As you can probably tell, my understanding of car electronics is minimal at best.
1) No, the speakers are powered by the stereo head unit. Leave their wires alone.
2) The cigarette lighter socket is another switched power source. Using it wouldn't work the way you want it to. You can use the power outlet socket power source instead as that is a non-switched fused battery power source. The power outlet socket power wire is the PK/BK wire and is protected by fuse 17 (20A) in the fuse block.

To be perfectly honest, I'd suggest to just leave the Jeep running for an extra couple minutes if you can't bear to miss part of your tunes. It's too easy to create electrical problems if you don't know what you're doing and modifications to the wiring can be a headache down the road.
04-29-2019 05:22 PM
RenoF250
Quote:
Originally Posted by Que89YJ View Post
You already have a battery feed to the radio for memory. I'm willing to bet you forget to toggle a switch and kill the battery.

Sent from my SM-G955U using Tapatalk
Generally the radio gets an always on 12V that is the main supply and then a switched 12V to turn it on. You can put a switch from the main 12 to the switched but I would add a diode on the vehicle side of the switched line so you do not back feed 12V into the ACC wire and power other things.
04-29-2019 05:13 PM
Que89YJ You already have a battery feed to the radio for memory. I'm willing to bet you forget to toggle a switch and kill the battery.

Sent from my SM-G955U using Tapatalk
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