6 Disc Dvd Changer Installation Help!

bennyyko2013 · 04-01-2016, 06:48 AM

Dear all!

Can someone please help me to decide and guide me in the right direction as to which method of connecting the power cables for the DVD changer is better?

The DVD power cord comes with 3 wires
1) Constant power (B+)
2) ACC power (ignition on power)
3) Ground

Method A:
1) Connect the constant power to the positive terminal of the battery directly.
2) Connect the ACC power to one of ACC IGNITION ON fuse slots in the fuse box
Pro: DVD CHANGER will retain its memory functionality
Con: DVD changer might drain the battery in the near future (was told numerous horrible stories about cd/DVD changer drain out car battery.

Method B:
1) combine/join both ACC POWER/CONSTANT POWER and connect them to the positive terminal of the battery
2) Install a 2-way switch (on/off) in between DVD AND the battery so that DVD changer remains power off mode when not in use.
Pros: Will not fear that my battery might be drained out one day
Cons: loss of memory functionality

Really need your advice/opinion on this!
Thanks for reading my post

bennyyko2013 · 04-01-2016, 06:54 AM

Yellow wire=constant power 12V

Red wire=ACC ignition power 12v

Soul_Glo · 04-01-2016, 12:24 PM

Method A for the win. Mine has been installed since 2012 and never run the battery down. Besides you should tender your battery now and again if you don't drive your car often enough.

04-01-2016, 06:48 AM	#1
bennyyko2013 Private First Class 8 Rep 114 Posts Drives: E91 Join Date: Aug 2013 Location: TAIWAN iTrader: (0)	6 Disc Dvd Changer Installation Help! Dear all! Can someone please help me to decide and guide me in the right direction as to which method of connecting the power cables for the DVD changer is better? The DVD power cord comes with 3 wires 1) Constant power (B+) 2) ACC power (ignition on power) 3) Ground Method A: 1) Connect the constant power to the positive terminal of the battery directly. 2) Connect the ACC power to one of ACC IGNITION ON fuse slots in the fuse box Pro: DVD CHANGER will retain its memory functionality Con: DVD changer might drain the battery in the near future (was told numerous horrible stories about cd/DVD changer drain out car battery. Method B: 1) combine/join both ACC POWER/CONSTANT POWER and connect them to the positive terminal of the battery 2) Install a 2-way switch (on/off) in between DVD AND the battery so that DVD changer remains power off mode when not in use. Pros: Will not fear that my battery might be drained out one day Cons: loss of memory functionality Really need your advice/opinion on this! Thanks for reading my post __________________ 2010 E91 320D LCI ALPINE WHITE, PERFORMANCE POWER KIT, PERFORMANCE BRAKE KITS, OEM M3 MIRROR WITH POWER FOLDING OPTION, M AERO PACKAGE, PERFORMANCE FRONT BUMPER CARBON FIBER LIPS N REAR CARBON FIBER DIFFUSER, FULL CARBON FIBER INTERIOR TRIM KIT, KONI 1130 W/ H&R SPORTS SPRING, EISENMANN RACE EXHAUST, OEM 19" WHEEL STYLE 230 & M225 Last edited by bennyyko2013; 04-01-2016 at 07:22 AM..
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04-01-2016, 06:54 AM	#2
bennyyko2013 Private First Class 8 Rep 114 Posts Drives: E91 Join Date: Aug 2013 Location: TAIWAN iTrader: (0)	Yellow wire=constant power 12V Red wire=ACC ignition power 12v Attached Images __________________ 2010 E91 320D LCI ALPINE WHITE, PERFORMANCE POWER KIT, PERFORMANCE BRAKE KITS, OEM M3 MIRROR WITH POWER FOLDING OPTION, M AERO PACKAGE, PERFORMANCE FRONT BUMPER CARBON FIBER LIPS N REAR CARBON FIBER DIFFUSER, FULL CARBON FIBER INTERIOR TRIM KIT, KONI 1130 W/ H&R SPORTS SPRING, EISENMANN RACE EXHAUST, OEM 19" WHEEL STYLE 230 & M225
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04-01-2016, 12:24 PM	#3
Soul_Glo Major General 13361 Rep 7,484 Posts Drives: G20 Join Date: May 2013 Location: Manhattan, NYC iTrader: (1)	Method A for the win. Mine has been installed since 2012 and never run the battery down. Besides you should tender your battery now and again if you don't drive your car often enough.
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