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      08-16-2018, 08:52 PM   #5
PA66400
Private First Class
Canada
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Drives: 2008 335i Sedan
Join Date: Oct 2011
Location: Calgary, AB

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Quote:
Originally Posted by coobraa View Post
Thank you. If only you would know where exactly he connected the wires...
Have you thought about tapping onto the red plastic-capped positive boost/charging lead in the engine bay? This may be easier. If you look at this lead, it has two neighboring (and interconnected) 10mm nuts - either of which you can attach a positive wire to with a crimped-on ring connector. There is a ground lead nearby, also with a 10mm nut.

The above is how I hard-wired my battery maintainer, for winter storage. It is live all the time and just connects to the rear battery via a car-length cable.

You would just have to feed your wires through a firewall grommet - there are a couple that you could use.
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