Quote:
Originally Posted by evanevery
Yes, but typically the starter solenoid has a hot connection directly from the battery. The solenoid also has a circuit to trigger its operation, but the hot lead is a heavy gauge, always hot, connection directly to the battery. That is usually a good place to tap an "always on" power source...
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If memory serves me well, there was a previous discussion that talked about tapping the power locally (maybe from the BMW amp - can't remember the exact details) but in the end I decided to run the power back to the fuse box under the glove compartment. It wasn't too hard to do, but added around another hour to the installation.