Sub wiring for W212 with Logic7
Junior Member
Joined: Jul 2013
Posts: 20
Likes: 3
From: Miami, FL
2013 E350 4Matic, 2006 Mustang GT Convertible, 2010 ML350 4Matic (wife)
By the way, the reason I am looking into this isn't for the bass, although I may get into that at some point... I am trying to direct wire my Escort Max - and was juat going to use an add a fuse to the back, but wasn't sure where a good ground was... Looks like I found that, but now am just a bit apprehensive about using the add a fuse!
Any thoughts?
I'd prefer not to vampire tap any wires if I can, which is the reason I'm looking at doing a long run from the trunk to the front in the first place
Any thoughts?
I'd prefer not to vampire tap any wires if I can, which is the reason I'm looking at doing a long run from the trunk to the front in the first place
Last edited by woodlander; Apr 28, 2015 at 06:32 AM. Reason: bass, not base - lol...
Junior Member
Joined: Mar 2015
Posts: 51
Likes: 1
w212
If you get a solid connection with a fuse at a fuse terminal of the rear SAM I think you'll be fine. As i mentioned, to stick a spade in a hot relay terminal can be dangerous because ya dont know what that circuit is intended for. A fuse terminal is usually getting its juice from the battery to power a relay. So, with the correct connection and protection of the add fuse Id be comfortable with that.
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Joined: Oct 2010
Posts: 5,142
Likes: 1,295
From: Southern US
2010 E550, 273 Engine: 2012 S550, 278 Engine
By the way, the reason I am looking into this isn't for the base, although I may get into that at some point... I am trying to direct wire my Escort Max - and was juat going to use an add a fuse to the back, but wasn't sure where a good ground was... Looks like I found that, but now am just a bit apprehensive about using the add a fuse!
Any thoughts?
I'd prefer not to vampire tap any wires if I can, which is the reason I'm looking at doing a long run from the trunk to the front in the first place
Any thoughts?
I'd prefer not to vampire tap any wires if I can, which is the reason I'm looking at doing a long run from the trunk to the front in the first place
If you are pulling wires from the trunk why not use the "cigarette lighter" in the trunk?
Junior Member
Joined: Jul 2013
Posts: 20
Likes: 3
From: Miami, FL
2013 E350 4Matic, 2006 Mustang GT Convertible, 2010 ML350 4Matic (wife)
I had the bright orange extension cord going from the trunk to the cabin for a while, which I hated, although it worked, it would come loose every now and again, and looked far from MB quality.
Guess my main reason for wanting to tap a fuse and run small flat wire is for cleanliness and a storong connection, but better route planning and a few zip ties (along with a black wire) could solve all that.
One thing I noted when I had the fuse chart out (which I posted), one lighter is 7.5a, the other is 15a... Will that make any difference?
If I tap a fuse, I'll likely use the sideways 15a in the middle of the trunk board, if that helps you, Rob - any thoughts on that F3lix? (It's the cigarette lighter one, #92) or I could even do the fuse which powers the trunk power port... (#72)
Happy Monday!
Junior Member
Joined: Jul 2013
Posts: 20
Likes: 3
From: Miami, FL
2013 E350 4Matic, 2006 Mustang GT Convertible, 2010 ML350 4Matic (wife)
Agreed on the amp DJ...
BTW, you from NJ? I grew up in Union and Bergen counties...
Has anyone ever "readded" the second battery in our e350s? Is it possible? How was the original charged, did they leave that stuff in tact? It would be great to have a second power source in the car, as long as something is there to keep it charged...
BTW, you from NJ? I grew up in Union and Bergen counties...
Has anyone ever "readded" the second battery in our e350s? Is it possible? How was the original charged, did they leave that stuff in tact? It would be great to have a second power source in the car, as long as something is there to keep it charged...
Newbie
Joined: May 2015
Posts: 1
Likes: 0
From: Ft Lauderdale FL
2012 E350 4MATIC
power required vs power available!!
Simple calculation to make the proper fuse requirement.. divide wattage by 12 volts...and always keep the 18" length or less from the power source. smaller gauge wiring will cause resistance and ultimately melt the insulation causing shorting or arcing against metal. last thing any of us want is to see a benz on fire. the run from the battery to the back isn't too band as there are many easily accessible openings in the firewall and going straight back down the passenger side. also, grounding and power cable should always be the same gauge, but grounding wire never more than 3 feet (estimate) from the amp. more power doesn't mean better sound, nor does more equipment. My previous experience was in some of the better shops in RI and in FL before the military. 
Woodlander- if you're referring to adding a second battery, IE audio yellow top, its simple. find the placement for the secondary battery and run your proper gauge wiring from your stock battery and connect as normal. when connecting an amp(s) utilize a capacitor with the designated farad needed for your system so you don't put strain on your charging system, after the second battery and before the amp of course. make sure you fuse the wiring on both ends just as a precautionary measure.
Woodlander- if you're referring to adding a second battery, IE audio yellow top, its simple. find the placement for the secondary battery and run your proper gauge wiring from your stock battery and connect as normal. when connecting an amp(s) utilize a capacitor with the designated farad needed for your system so you don't put strain on your charging system, after the second battery and before the amp of course. make sure you fuse the wiring on both ends just as a precautionary measure.
Last edited by Jlataille; May 1, 2015 at 02:47 PM. Reason: in response to woodlander
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Member
Joined: Apr 2015
Posts: 187
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2013 E350 Sport
Agreed on the amp DJ...
BTW, you from NJ? I grew up in Union and Bergen counties...
Has anyone ever "readded" the second battery in our e350s? Is it possible? How was the original charged, did they leave that stuff in tact? It would be great to have a second power source in the car, as long as something is there to keep it charged...
BTW, you from NJ? I grew up in Union and Bergen counties...
Has anyone ever "readded" the second battery in our e350s? Is it possible? How was the original charged, did they leave that stuff in tact? It would be great to have a second power source in the car, as long as something is there to keep it charged...
MBWorld Fanatic!
Joined: Feb 2011
Posts: 1,752
Likes: 175
From: London, UK
W212 - E63 AMG
Also, FWIW I used a thicker power cable for the amp as can be seen here. Assuming this is safe enough, right?
I tapped into the green and green/brown wires as explained by the OP but need to buy some phono leads tomorrow to connect properly into the amp for good sound signal.
