Quote:
Originally Posted by Paul
The radio security wire should not be grounded.
Always test for current with a test light, a voltmeter is useless. Connect the light to your power and ground sources.
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Yes, the brown/blue wire needs to be grounded or the alarm will sound.
Pelican Technical Article: Changing Your Boxster Stereo Head Unit / Installing Boxster Ipod Integration - 986 / 987
Take it from an engineer; a "test light" is antiquated and doesn't tell you anything about power (actual current and voltage), only that you are completing a circuit. A multi meter is much more useful. 
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Last edited by particlewave; 12-08-2014 at 04:19 PM.
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