2004 tacoma trailer wiring

Please help,

I am trying to install a 4 pin harness on my 04 tacoma but it has one wire that does brake and turn signal.  My car has seperate wires for brake and turn signal (Red Brakes, Amber Blinkers) can somebody help me out here that has wired one up already.

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2005 Toyota Corolla S
    1.8L VVT-i I-4
Always double check your wires with a DMM!!!
Do Not Use A Test Light!!!
MECP Certified Installer!
Best Buy 665 - IN IT TO WIN IT! TEAM MOBLE!

I know this isn't much help, but the toyota brand one is plug and play and only 24$, no wires to strip or anything.

i do have the toyota brand, but since my tacoma was not ready for the towing package, wires have to be spliced.  Dealer is not mych help, but just tells me to pay for them to put it in.  Anybody have any clue?

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2005 Toyota Corolla S
    1.8L VVT-i I-4
Always double check your wires with a DMM!!!
Do Not Use A Test Light!!!
MECP Certified Installer!
Best Buy 665 - IN IT TO WIN IT! TEAM MOBLE!

Thats strange. I work for toyota, and the correct harness is a 15 minute install. You unplug the taillights, plug the new harness in each and plug the existing taillight harness into it, route the output wire to the bumper. Installed. I would imagine the one you got is an aftermarket that that particular dealer gets a 'good deal' on and sells as OEM. We have a few parts ourselves that are like that. Otherwise, you got me.

the harness that I bought says that plugs should be under the rear frame of the vehicle.  there are no such plugs.  can you give the locatoin of what plug you are talking about.  Please help I have to tow a boat tomorrow and would really like to have the lights on the trailer working.

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2005 Toyota Corolla S
    1.8L VVT-i I-4
Always double check your wires with a DMM!!!
Do Not Use A Test Light!!!
MECP Certified Installer!
Best Buy 665 - IN IT TO WIN IT! TEAM MOBLE!

when you take your taillights out (four screws each) there is a harness plugged into them for all the lights, unplug that on both lights.
Take the trailer harness and insert the trailer end pigtail and the passenger side light end down through the opening in the driver side taillight opening, pulling them out through the bottom through the 2" access hole.
Stop when the converter box is flush at the top of the driver side taillight opening. zip tie the converter box to the steel barrier there, there is a slot on the inboard side to slide the 14" zip tie through, and a hole in the converter box for the tie to go through.
Take the left side trailer harness plug (labelled at converter box) and plug the truck lamp harness into it. the other end of the T in the harness goes into the tail lamp. Do the same for the passenger side.
ROute the output pigtail along the factory wiring to the middle of the truck, and out the back. There is a white wire with an eyelet on it sticking out of the output end of the harness, about halfway down. You need to bolt that to the chassis. On two doors (if memory serves) there is threaded hole between the spare tire and new hitch location, and the four door has a non-threaded hole off to the driver side of the spare tire, right along the factory harness routing. Newer two doors will have that hole too, and it is much easier to use.

Done deal :)

Ok, found what the problem was, the harness was for a tundra not a tacoma, I guess I should read the box befrore attempting to install, took it back to the dealer and was very plesent untill he told me that I had to buy a $153 unit for that.  Since you work for toyota does that sound about the right price range for a wiring harness?  And I found the plugs that you were talking about, just need the right harness now. Please reply ASAP, do not want to spend $153 unless I absolutely have to.

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2005 Toyota Corolla S
    1.8L VVT-i I-4
Always double check your wires with a DMM!!!
Do Not Use A Test Light!!!
MECP Certified Installer!
Best Buy 665 - IN IT TO WIN IT! TEAM MOBLE!

153 is pretty high. That -is- the right price range according to a quick look online, but its way marked up. The last one i did had $24.00 on the SOP ticket.   SOP's usually go for 20-50% markup, depending on value of the part. If you have a buddy that works in the industry, have them call an see if he can get a better business to business price on it. If not, 150$ isn't all that bad for what you're getting.

..we have these light kits for scions that we get 180$ a piece for, i found them online at another toyota dealer for 40$ the other day... each dealer is different on certain parts, if you have multiple dealers in your area, try calling around.

good luck

150 is rediculous. Found this for 33 bucks.

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Certified Security Specialist
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Thanks auex, that is exactly what I need.  SUPERBOVINE thank you especially for helping me with that.  You guys were a big help.  I will check with toyota again tomorrow to see just why that one is so much more.

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2005 Toyota Corolla S
    1.8L VVT-i I-4
Always double check your wires with a DMM!!!
Do Not Use A Test Light!!!
MECP Certified Installer!
Best Buy 665 - IN IT TO WIN IT! TEAM MOBLE!

A little late, but i checked with my parts manager, cost is 24$, the most they charge for it is 36$, but to most people they just sell it at or near cost anyway to keep customers happy.

Hope you got everything worked out.

ok guys kinda the same problem here, i got a harness put on and got a new trailer and when i plug the trailer into my truck i have turn signals and running light on the trailer but when i hit the brakes i blow 2 fuses and my truck locks in park any ideas? I was told that toyota has reverse polarity and the trailer is right but my harness was hooked up wrong.......open for any ideas at all!

[QUOTE=bsleepy]ok guys kinda the same problem here, i got a harness put on and got a new trailer and when i plug the trailer into my truck i have turn signals and running light on the trailer but when i hit the brakes i blow 2 fuses and my truck locks in park any ideas? I was told that toyota has reverse polarity and the trailer is right but my harness was hooked up wrong.......open for any ideas at all! I hookes my trailer up to a gmc and it all worked fine, i have a 4 point plug harness.

something isn't hooked up right... if you are blowing fuses theres a short somewhere. the trailer is new, so i'd double check that you have the correct harness and that it is installed correctly.