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<blockquote data-quote="da_guitarist" data-source="post: 3239039" data-attributes="member: 579537">I have a 99 Mercedes CLK430. It has a factory Bose system. I installed an Alpine R 12 and a Power Acoustik A2100D mono amp.&nbsp; As for wiring, here&#039;s what I did:New Amp:-Power/fuse from + battery term (4 gage, 80 amp fuse)-Ground to bolt that battery is grounded to (4 gage)-Remote from blue/white bose amp remote (18 gage, tap spliced)-Speaker signal from grey/brown cables to rear deck sub, post bose amplifier (tap spliced 18 gage into rca plug input)-12 gage speaker wire from amp output to sub enclosureI was running the amp (2100w max) at only 30% or less with the amp gain knob, and it was kicking fairly hard, but nothing ridiculous or seemingly dangerous. Worked great for a while (only hooked up 1 day)...then suddenly it stopped working after a 20 min ride. the Protection light is coming on and I get no sound out to the sub. The sub isn&#039;t scratchy and shows 4.2 ohms w/ a voltmeter. So i think the sub&#039;s goodAt first I thought maybe it&#039;s a ground problem with the input being amplified first and at a higher level than the chassis ground of the amp. Not so sure now. This is where it gets tricky:I tried to fade the signal to the rear speakers using the head unit, and there is NO sound from the rear speakers now?! I wonder if the bose amp doesn&#039;t like this...or if i could have blown the rear speakers(bose factory &quot;subs&quot; on rear seat deck)?When I get a chance, I&#039;ll rewire it to the INPUT wires to the bose amp (from head unit) and see what happens. Please don&#039;t tell me about my equipment *******. I put only about $170 total in parts and install items.</blockquote>

[QUOTE="da_guitarist, post: 3239039, member: 579537"] I have a 99 Mercedes CLK430. It has a factory Bose system. I installed an Alpine R 12 and a Power Acoustik A2100D mono amp. As for wiring, here's what I did: New Amp: -Power/fuse from + battery term (4 gage, 80 amp fuse) -Ground to bolt that battery is grounded to (4 gage) -Remote from blue/white bose amp remote (18 gage, tap spliced) -Speaker signal from grey/brown cables to rear deck sub, post bose amplifier (tap spliced 18 gage into rca plug input) -12 gage speaker wire from amp output to sub enclosure I was running the amp (2100w max) at only 30% or less with the amp gain knob, and it was kicking fairly hard, but nothing ridiculous or seemingly dangerous. Worked great for a while (only hooked up 1 day)...then suddenly it stopped working after a 20 min ride. the Protection light is coming on and I get no sound out to the sub. The sub isn't scratchy and shows 4.2 ohms w/ a voltmeter. So i think the sub's good At first I thought maybe it's a ground problem with the input being amplified first and at a higher level than the chassis ground of the amp. Not so sure now. This is where it gets tricky: I tried to fade the signal to the rear speakers using the head unit, and there is NO sound from the rear speakers now?! I wonder if the bose amp doesn't like this...or if i could have blown the rear speakers(bose factory "subs" on rear seat deck)? When I get a chance, I'll rewire it to the INPUT wires to the bose amp (from head unit) and see what happens. Please don't tell me about my equipment *******. I put only about $170 total in parts and install items. [/QUOTE]

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