Vehicle Wiring Harness
2010
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how to wire trailer harness to vehicle with seperate turn and brake lights?
Listen very carefully. You are going to hear a bunch of senseless give me my two point answers. I guarantee what I will tell you is correct. If you have separate brake lights and turn signals you have a three wire system. A "normal" trailer that hasn't yet been cobbled up and defiled has a two wire system. You "CANNOT" directly wire your vehicle's trailer plug without a tailight convertor. I am assuming your vehicle has no existing trailer wiring and you are going to use a simple 4-pin flat plug. What that means is you are not going to have a battery charge wire or electric brake wire or a backup light or accessory wire in the plug. Your plug will consist of a brown, green, yellow and white wire only. What you should look for is made by DrawTite, it is a kit that plugs into your vehicles harness either at the tailight or underneath the car depending on what kind of vehicle it is. If I knew what you had I could probably get you the part number in a matter of minutes. Since your vehicle has a three wire system the kit will have a convertor built into it and it will convert your three wire system into a two wire system to be compatible with your trailer. Most of these kits are around $30.00 but some are more if they require a module. Cars like Crown Vics require modules because they use like 22 ga wire and the lights run through the computer system and adding extra load of trailer lights could short out the ecm. If you want to add what kind of vehicle you have and do let me know via email in case I don't check back on this I will try to get you the part number. Don't cut anything or try to do anything without knowing exactly what you are doing. You will make yourself a headache that will cost you money to get rid of. Stay away from the U-haul junk, it is not "standard" wiring. Their stuff is made to work with their trailers and their trailers are not normal.
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