Amp install in trunk. Need Help with ground connection!
08-01-2012, 02:36 PM
#11
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My Ride: BMW
Model Year: 2006
Actually, I ended up using the ground point where what looks like the "fan connector" is mounted. That connector is also the one used by the Bruce miranda LCI Tail adapter.
08-03-2012, 09:37 AM
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My Ride: 04 545i sport, stick, L7, sat, nav. Charcoal/ runflat/ cdv delete.
Suede headliner/ trunk, 3 way front speakers, four 8" subs in rear shelf, ACM, iPod dock in ash tray using gateway 500 with MP3 text and video on screen, MRTM aluminum pedals/ door pins, 10 farad cap, sound processor, line conditioner, 2 amps ( 4x100 and 2x200)
I don't agree with the theory of not putting it to ground due to IBS lead not being able to sense current drawn by the power hungry amp. IBS is on positive lead so as long as you connect directly to the positive irrespective of where you put ground you are bypassing it anyway. Remember in order to detect the "current" draw most electronic measuring device must be connected in series. IBS is intelligent I guess it checks both current and voltage to instruct dme to release alternator charge accordingly.
Here is some info that supports my claims.
The IBS sensor is on the negative battery terminal.
More info here: http://tis.spaghetticoder.org/s/view.pl?1/08/88/45
It reads current draw using something similar to the Hall Effect... not by measuring current draw in series with the battery, it measures the magnetic field created by the current passing through the cable.
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