Pass. side trailer turn and brake lights out 1999 ford explorer

Congrats, you have found Ford's super secret fuse that drove everyone mad for years!

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Trailer Wiring Diagrams 4 Way Systems

4 way flat molded connectors allow basic hookup for three lighting functions; right turn signal / stop light (green), left turn signal / stop light (yellow), taillight / license / side marker (brown) and a ground (white).

4 way tow vehicle side.
4 way trailer side.
5 Way Systems

Same as 4 way system listed above but adds a extra blue wire for brake signal or auxiliary power. Used on pop up camper trailers or utility / boat trailers.
5 way tow vehicle side.
5 way trailer side.
6 Way System, Rectangle Plug 3/4 inch by 1 inch 6 way rectangle connectors right turn signal (green), left turn signal (yellow), taillight (brown), ground (white). The red and blue wire can be used for brake control or auxiliary. Use on a small motorcycle trailer, snowmobile trailer or utility trailer. Can also be used as custom wiring on trailers with 3 light/wire systems. See "Tow Vehicle Taillight Wiring" below.
6 way tow vehicle side.
6 way trailer side.
6 Way Systems, Round Plug

Round 1 1/4" diameter metal connector allows 1 or 2 additional wiring and lighting functions such as back up lights, auxiliary 12v power or electric brakes. Note: The black (sometimes red) 12v and blue electric brakes wire may need to be reversed to suit the trailer. Check with a test light or VOM. Uses: horse trailer, travel trailers, landscaping trailer, car trailer, etc.

6 way tow vehicle side.
6 way trailer side.
7 Way Systems

Round 2" diameter connector allows additional pin for auxiliary 12 volt power or backup lights. Uses: heavy duty landscaping trailer, car trailer, boat trailers, horse trailer, travel trailer, construction trailer, etc. Check with a test light or VOM.

7 way RV flat blade tow vehicle side.
7 way RV flat blade trailer side.

you'll have to have an after market tow bar installed.

http://www.google.com/search?q=tow+bar+installation&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7

V8 or V6

Cyl 1 thru3 or 4 ---front to back --pass side

Cyl 4 thru 6 --or 5 thru 8 in case of V8 --driver side

V6 1-4-2-5-3-6

V8 1-3-7-2-6-5-4-8

Sounds like the converter is bad. Go to http://www.etrailer.com/faq-wiring.aspx and check the testing section. Hope this helps.

The rear lights :

Brown is the parking lamps ( either side )

Driver's side Stop / Turn : Light green w/ White stripe wire
Pass Side Stop / Turn : White w/ Light blue stripe wire

Another option ( for use with the factory trailer circuits ) is to add / replace the factory tow adapter. eTrailer has them, if you are interested. This is the type adapter as Ford p/n: YL3Z-13A576-G. You would need to install the relay and the fuses for the trailer circuits if you do this.

From the factory there is an unused plug in the left brake light harness. You can get a tow light cable from Ford that's JUST for that, and its a 4 flat plug on the end. I 'found' mine in the compartment on the left where the jack is. Just peek in there with a light. It was still in the package. Otherwise call Ford, the thing plugs in and you route it down and there's a bracket to hold part of it under the bumper to an existing screw location.
-Cheers.

do you have a 5.0 v8 AWD?

Battery junction box (BJB) fuse(s):

• 5 (30A) (trailer electric brake controller)
• 34 (25A) (trailer tow turn relays)
• 42 (30A) (trailer tow parking lamps)
• 44 (30A) (trailer tow battery charge relay switch side)
• 63 (15A) (trailer tow reversing lamps

You should probably check the multi-function switch. This is the turn signal switch assembly. The brake lights on most all vehicles, are routed through the turn signal switch, and then go to the rear of the vehicle. This is done because the brake light bulb on many vehicles is used as a turn signal bulb as well, and there has to be a way to break the connection from the brake light circuit to allow the turn signal to operate on the same bulb. Use caution when checking or removing the multi-function switch assembly, as you must remove the protective cover from the steering column, and there is an air bag harness located inside. If in doubt, always refer to the manufacturer's service guidelines for making any repairs in or around the steering column.