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Old 09-01-2018, 07:55 PM
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Join Date: Apr 2012
Location: 11762
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Aftermarket amp and sub in JLUR with 7" screen

So, I've installed an LC7 for high to low conversion, a 4 channel Kicker amp, four Kicker KS 5.25" speakers, and a JBL powered sub box.

It sounds really good, at least until I pull up to a stoplight. The Autostart feature kills the engine. Music still sounds good. The light turns green, and when the Jeep restarts, theres a slight pause in the music, and then a momentary increase in the volume, before everything goes back to normal.

I have done the following as far as troubleshooting:

I tied the turn on lead to always hot, to see if I was losing turn on voltage. No dice.
I installed a analog voltmeter at the power block in the back of the jeep where the amp, sub, and line converter tie in, and it drops to 8 volts during startup. I figured that I need to install a capacitor there to maintain voltage during startup.
Installed the Cap, and no change.

I know that during engine startup, there will be a voltage drop, but 8 volts is pretty high. Perhaps my ground isn't as good as I initially thought? I guess that's my next change, but frankly, this has me quite exasperated. Anyone have any thoughts?


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Old 09-05-2018, 03:45 PM   #2
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Join Date: Oct 2017
Location: Reidsville, NC
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Buy a Smart Stop Start module and forget about the stop start feature forever more.

My WK2 has this "feature" and it bugs the crap out of me. I'm always forgetting to turn it off. I'm just too cheap at this time to buy a module but it's getting close.

I'm assuming that you ran a heavy gauge wire to the power block? Something in the range of a 4 GA? A good solid ground is going to be a must too.
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Old 09-06-2018, 09:25 AM   #3
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Yeah, ESS + aftermarket stereo = bad plan.

It doesn't surprise me that there is a small interruption in sound upon start up. That's pretty to be expected. As far as it getting louder then softer again, isn't there a feature on the radio for source volume level matching? I forget what it's called exactly but that could cause it.

But the bottom line is that I'd just avoid using the ASS feature.
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Old 09-07-2018, 11:46 AM
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Join Date: Apr 2012
Location: 11762
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It turns out that there's a second battery to maintain auxiliary equipment while there engine is off. I connected to the N1 post on the fuse block and all of my issues disappeared. I understand that no one likes the ESS feature. No one liked seatbelts. Or emissions. Or airbags. It's just another new thing to get used to.
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