12 volt acc. power source
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Junior Member
Joined: Aug 2008
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12 volt acc. power source
Can anybody please tell me where I can pick up an ignition activated 12 volt power source on a 2008 F150 suppercrew? I need it to power a digital pressure gauge for my air bags.
Technical Article Contributor
Joined: Jun 2002
Posts: 10,511
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From: Under the flightpath of old ORD 22R
Easy one is to use an add-a-fuse ( avail at Walmart I have read, not Napa anymore ) in the radio fuse slot.
This puts the Radio fuse back in as factory, and adds a fuse for use with you gauges, that will not overload the factory wiring.
Fuse F22 would be the output of the accessory delay relay ( power on until the doors open, or the time runs out.
Fuse F1 ( 10A ) is hot Accessory / run position ( not part of the accy delay circuit ).
Don't know which function you want ( pure accy / run position or with the time frame of the radio / windows ).
This puts the Radio fuse back in as factory, and adds a fuse for use with you gauges, that will not overload the factory wiring.
Fuse F22 would be the output of the accessory delay relay ( power on until the doors open, or the time runs out.
Fuse F1 ( 10A ) is hot Accessory / run position ( not part of the accy delay circuit ).
Don't know which function you want ( pure accy / run position or with the time frame of the radio / windows ).
Technical Article Contributor
Joined: Jun 2002
Posts: 10,511
Likes: 10
From: Under the flightpath of old ORD 22R
Check those fuse locations against your owners manual, I took those from a 2006 EVTM. Should be the same, but you never can tell, and better safe then sorry. I have not pulled down a 2008 OM, for reference yet.
