See my additional wiring notes in post #40, below.
Quote:
Originally Posted by RR
Second question, coming out of the Parrot harness, there are two black grounds, one was wired into the ISO connector, the second has a barrel connector. I have connected the one that was going into the ISO to my subaru harness, do I need the second one or should I leave it unconnected?
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Quote:
Originally Posted by RR
Did you connect the green parking brake wire to the two grounds as well?
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The black wire that goes into the ISO connector is the only one you need for the HU.
The second wire (terminated with a female bullet connector) has a smaller-gauge wire. Parrot's wiring diagram (in their Quick Start Guide) shows that not connected to anything. However, you might notice that the HU's green parking brake lead conveniently has a male bullet connector. Hmmm...