Join Date: May 2014
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When I bought my truck (2005) it had same issue, 0.02v If the 7.3 is different, then ignore this post.
Like was said in previous post, there are additional fuses and relays which are under the hood. They are in place to protect the truck lights if a trailer has a shorts or bad grounds. it sounds like you have at least a relay and a fuse blown. after you fix the fuses, be sure to check your boat trailer wiring harness, fuses dont blow for no reason
'05 F250 XL Extended Cab - 2 Wheel Drive, No Options Except: Integrated Brake Controller, 3.73 w/ Limited Slip, Upfittter Switches & AC
Added: Edge Monitor with EGT, Fuel Pressure, coolant pressure, low oil pressure system sensor & Ambient Temperature Sensors, turbo timer & back up camera. High Idle Mod. Manual Fan Mod, Power fold/power extend mirrors.
Installed: Cruise Control w/ Leather Steering Wheel, 17 Alloy Rims off XLT, 40 20 40 Vinyl Front Seats
Well maintained with Motorcraft parts, over 222k miles and still have original head bolts.
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