Compression Ignition Addict
Join Date: Mar 2008
Location: Santa Rosa, CA
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The 08 upfitters don't use a control relay like the 05-07's, they get power from the smart junction box so you would have to cut the power wire and add a new wire with a fuse to a full time 12v source. It looks like it is the solid green wire feeding the upfitter switches.
Here's the upfitter diagrams, just scroll down for the 2008 diagram: https://www.fleet.ford.com/TRUCKBBAS/non-html/Q117.pdf
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2005 F-250 CC/SB 4x4 medium wedgewood blue
5" lift, 5" Donahoe rear springs, 35x13.50 MTZ's, 18x12 Fuel Hostage wheels, 4.30 gears, Banks 4" exhaust, Airraid intake, SCT from Innovative, ARP headstuds, Bulletproof ficm, Bulletproof EGR cooler, Scangauge II, Randy Ellis Design lightbar, Street Scene flares, Harpoon mod, Zoodad mod, LED 2010 taillights, Switchback LED front turn signals
Last edited by GregsSD; 06-22-2010 at 09:21 PM.