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<blockquote data-quote="shadowjack1965" data-source="post: 6050650" data-attributes="member: 611715">Thought it better to resurrect an old thread that applies to my question than create a new one; I tried a search but didn&#039;t find any similar questions so I apologize if I&#039;m duplicating.I installed the W505 in my 2006 Impala (non Bose, non-OnStar).&nbsp; My previous GPS unit (Pioneer AVIC-N3) worked fine with my Scosche GM21SR, (their version of the GMOS-LAN-01), which extended the parking brake and speed sensor to the head unit install, eliminating the need to run these cables to the parking brake sensor and speed sensor wire.&nbsp; With the W505 this isn&#039;t working.I plan on buying the Pac TR-7 for the video bypass, so my questions are:1.&nbsp; Do I even need the GM21SR with the Pac TR-7?2.&nbsp; With the Pac TR-7 do I still need to connect to the vehicle&#039;s parking brake and speed sensor wires?Thanks in advance!Jack</blockquote>

[QUOTE="shadowjack1965, post: 6050650, member: 611715"] Thought it better to resurrect an old thread that applies to my question than create a new one; I tried a search but didn't find any similar questions so I apologize if I'm duplicating. I installed the W505 in my 2006 Impala (non Bose, non-OnStar). My previous GPS unit (Pioneer AVIC-N3) worked fine with my Scosche GM21SR, (their version of the GMOS-LAN-01), which extended the parking brake and speed sensor to the head unit install, eliminating the need to run these cables to the parking brake sensor and speed sensor wire. With the W505 this isn't working. I plan on buying the Pac TR-7 for the video bypass, so my questions are: 1. Do I even need the GM21SR with the Pac TR-7? 2. With the Pac TR-7 do I still need to connect to the vehicle's parking brake and speed sensor wires? Thanks in advance! Jack [/QUOTE]

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