Can leaving ignition on cause damage
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Junior Member
Joined: Jul 2010
Posts: 84
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From: Scotland, Ayrshire coast
Year: 1999
Model: Grand Cherokee
Engine: 4.7 V8
Can leaving ignition on cause damage
My after market stereo only works with the ignition on, I checked the accessory fuse and it isn't blown.
Many years ago I was told that leaving the ignition on with the engine turned off will burn out the coil and cause all sorts of terrible things to happen
On modern cars is it safe to have the ignition on to listen to the radio while parked ?.
Many years ago I was told that leaving the ignition on with the engine turned off will burn out the coil and cause all sorts of terrible things to happen
On modern cars is it safe to have the ignition on to listen to the radio while parked ?.
CF Veteran
Joined: Mar 2010
Posts: 6,685
Likes: 6
From: Jacksonville, FL
Year: 92
Model: Cherokee
Engine: 4.0
Originally Posted by Artful Owl
My after market stereo only works with the ignition on, I checked the accessory fuse and it isn't blown.
Many years ago I was told that leaving the ignition on with the engine turned off will burn out the coil and cause all sorts of terrible things to happen
On modern cars is it safe to have the ignition on to listen to the radio while parked ?.
Many years ago I was told that leaving the ignition on with the engine turned off will burn out the coil and cause all sorts of terrible things to happen
On modern cars is it safe to have the ignition on to listen to the radio while parked ?.
CF Veteran
Joined: Jan 2012
Posts: 1,057
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From: Nazareth/Pen Argyl, Pennsylvania
Year: 1989
Model: Cherokee
Engine: 4.0L 242ci I6
I wired a Pioneer 3400UB using an adapter that plugs into the existing factory harness. The adapter comes with color coded wires that you splice into the wires from the stereo plug. Any wires not used (in my case, just the dimmer ones) can be taped up and left alone. My system works when I put it on accessory. I recommend doing this. The adapter is only about $10 on average. On amazon you can find them pretty cheap. I used a "Scosche JE01B 1989-97 JEEP/EAGLE Car Stereo Connector." Check with amazon to make sure the part fits your XJ and also check with Scosche. I think they can be bought at Walmart too. Just make sure it fits before you use it. The original harnesses change through the years. Good luck!
CF Veteran
Joined: Mar 2010
Posts: 6,685
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From: Jacksonville, FL
Year: 92
Model: Cherokee
Engine: 4.0
Originally Posted by highmileage
It can burn up the ignition switch box on top of the column, and cook the harness that plugs into it.
You do realize it is no different than than the vehicle running? When its running it's still in the ignition on position.
Only way something like that will burn up is if the connections are corroded
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CF Veteran
Joined: Oct 2011
Posts: 1,268
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From: Bakersfield CA
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
mine had no corrosion, and I have seen this problem creep up in forum before , the box just overheats. It only seems to be a RENIX problem though
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Junior Member
Joined: Jul 2010
Posts: 84
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From: Scotland, Ayrshire coast
Year: 1999
Model: Grand Cherokee
Engine: 4.7 V8
Nothing works when the switch is in ACC, the wiring is all messed up I'm gradually sorting things out.
There was no radio in it but it had the after market harness that another poster mentioned.
I'll get round to fitting a wire direct from the battery to the stereo, I didn't realise the fuel pump was on with the ignition
There was no radio in it but it had the after market harness that another poster mentioned.
I'll get round to fitting a wire direct from the battery to the stereo, I didn't realise the fuel pump was on with the ignition
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