2008- 2010 General QuestionsGeneral questions related to 2008-Up Super Duty trucks. If it doesn't fit the other categories, post it here. Gas engine discussion that pertains to all models is allowed. Specific gas engine questions should use the Gas Engines forum.
I have a 08 F350. I am having a problem with the trailer running lights not functioning. I have brake lihts and turn signals. When I put a probe to the running lamp post there was no power there. I am assuming that this is due to a blown fuse. But I can not find a fuse in the owners manual that is blown. Nor do I find on in either box (pass floor) (under hood) that says trailer running / tail lamps. Anyone have advise???
Thanks.
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2008 F-350 Crew Cab,.6.4 td King Ranch All options but DVD (Moon roof instead). 20" wheels are one must have IMHO.
left side of engine compartment there is a fuse box under a vacume thing. I had the same problem as you and thats where I found the fuse box. Its not labeled in the owners manual very well so you just have to check each fuse . good luck
'08 f350 SD 6.4L diesel.
I have the same problem, running lights for the trailer not working. The fuse in the CJB under the hood is fine, tested the fuse it's fine, tested for power to the fuse, there is power. Just no power to the harness at the back of the truck.
Is there another place that I can check?
'08 f350 SD 6.4L diesel.
I have the same problem, running lights for the trailer not working. The fuse in the CJB under the hood is fine, tested the fuse it's fine, tested for power to the fuse, there is power. Just no power to the harness at the back of the truck.
Is there another place that I can check?
Dont trust your fuse diagram. Its not always completely accurate. Check every fuse in your fuse box and then see if your trailer lights work. I had the same issue a few months ago, and found a fuse that was blown that was in no way associated with the trailer lights, when I replaced the fuse everything worked.
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Ryan Kranz
2000 F250 Maroon lariat ext cab, short bed. 2.5" leveling kit, Ranchhand front replacement, custom Headache rack, 285 Revos, Rancho Steering Stabilizer, Tymar, 4" turbo back exhaust (no muffler), Wicked wheel, quad pod with Dipricol optix (boost, pyro, trans, fuel pres), Steering column pod with optix HPOP guage, DI 6 position chip (40, 60, 80, 100, 140, high idle), Fumoto, dieselsite BRV, custom made turn over goose neck hitch, clear corners, silverstars, Cobra 29 CB, CCV, Blue IC Boots, TC lock up switch, LED side marker lights, cab lights with smoked lenses.
Let freedom ring and the turbos sing.
People that have treated me right:
DI, Diesel Power Products, SP Diesel, Dieselsite, ITP
302 HP/720 TQ (In the 80 setting)
If it dont smoke black, take it back
I have a similar problem... except I have running lights and no right or left turn lights which operate under separate fuses... I've looked through all the fuses both inside and under the hood to no avail... What now? Irritating (the truck's lights work, of course) Also, all the other lights on the trailer work to include the interior which work off the charging line.
Check the relays for the trailer lights in that same fuse box under the hood. same thing happened to me the other day in my 2010. It blows the 30a fuse and the relay.
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