Compression Ignition Addict
Join Date: Mar 2008
Location: Santa Rosa, CA
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There is also a relay in your dashboard fusebox that powers the upfitter switches, look in your owners manual to find which relay it is. If it is going bad then you would have those same symtoms.
EDIT: Sorry, the 2008 and newer upfitters don't have a relay in the fusebox, only the 2005-2007 do.
Here is the wiring info for both styles of upfitter switches, hopefully this will help you out: https://www.fleet.ford.com/TRUCKBBAS/non-html/Q117.pdf
2005 F-250 CC/SB 4x4 medium wedgewood blue
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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, 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; 09-26-2012 at 03:59 PM.