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+12v switched on 2006 jeep grand cherokee


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derdud 
Member - Posts: 1
Member spacespace
Joined: August 29, 2007
Location: United States
Posted: August 29, 2007 at 10:03 AM / IP Logged  

Hey all -- I'm installing an aftermarket device in a 2006 Jeep Grand Cherokee and according to Directechs the two places I'd normally look aren't viable options.

1. At the radio, there's only +12V Constant. Instead of switched power, it has a data bus going into it.

2. Ignition. It's a negative trigger. I can reverse the polarity using a relay but I'd rather just find an existing source of switched power to tap from. It's been a long time since I've been in an install bay and I'm pretty rusty in the relay department.

The only other place I can think is to pull it from an accessory outlet, but I haven't yet seen the vehicle so I don't know if the accessory outlets on the Jeep are switched or constant.

Any recommendations?

NowYaKnow 
Gold - Posts: 1,217
Gold spacespace
Joined: December 18, 2002
Posted: August 29, 2007 at 5:34 PM / IP Logged  
The ignition isn't negative trigger you will still find a positive ignition source there. You would want to use a relay off that wire though as it is not high current. You could also use any of the cigarette lighters that are on switched power. Last if you take down the panel covering the steering column look all the way to the left if I remember right there should be a harness with a thick RED / yellow or pink / YELLOW that you could use.
Mike

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