so, i've hooked up two trailers and only the running lights work. No brake lights or turn signals.

I swear it worked about 2 weeks ago. When i looked down at the fuse under the hood (without pulling it out) the connection seemed fine on the top. There is a brake controller installed on the vehicle as well. I've tried it with and without the brake controller. any ideas?

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"Never mind the maneuvers, go straight at "em," Lord Horatio Nelson

2005 Jeep Liberty CRD

I had it happen to me once and it blew the fuse in the dash, I think 4 way flasher, brake, and turn signals, Then another time dash light and running lights. Turn out the trailer wiring was rubbing on the frame and shorting out. A roll of electrical tape fixed that.

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2006 Black Jeep Liberty CRD Limited
K&N, Samco Hoses, Michelin 245/70-16 LTX A/T2, Fumoto F-102, V-Force Muffler, Mopar, Hitch, Trailer Wiring, Skid Plates, Slush Mats, Rear Shelf, Predator Stage 1, Transgo, ORM & CodeReader, Facet 40109 Pump
"IT'S A DIESEL THING, YOU WOULDN'T UNDERSTAND"
Certified Services Auto & Truck Repair

the fuse was fine. any more ideas?

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"Never mind the maneuvers, go straight at "em," Lord Horatio Nelson

2005 Jeep Liberty CRD

If it is just the brake and turn signal on the trailer it could be the convertor in right rear panel.
It's time to bring out the test light and see whats at the trailer plug on the Jeep.

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2006 Black Jeep Liberty CRD Limited
K&N, Samco Hoses, Michelin 245/70-16 LTX A/T2, Fumoto F-102, V-Force Muffler, Mopar, Hitch, Trailer Wiring, Skid Plates, Slush Mats, Rear Shelf, Predator Stage 1, Transgo, ORM & CodeReader, Facet 40109 Pump
"IT'S A DIESEL THING, YOU WOULDN'T UNDERSTAND"
Certified Services Auto & Truck Repair

You did not change the adapter plug did you?

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2005 CRD Sport - "Blackie"
Tow Package
Trac Loc
GDE EcoTune w/ unl torque
Goodyear Wrangler SilentArmor Tires
over 192,000+ miles
100k mile service performed
5V Glow Plugs Installed and ECM updated