Here is the wiring diagrams you need to fix the problem. Ground the trailer connector at the front of the trailer, which will use the trailer frame as a ground wire. Grounds rust off, loosen up and fall apart. It seems like my ground for my trailer lights isnt working so I am guessing I have a bad connection somewhere. Wiring Diagram for Bulkhead Lights 2019 2005 Chevy Silverado Tail. This is the second video ive ever uploaded! Below is a chart to help you determine the specific harness or harnesses that connects to a specific electrical component, or the harness you might need to correct an electrical problem in your 1953-67 Corvette.. Black wire is ground. A more common case scenario presupposes ground to be provided through the bolts of the tail light assembly. The passenger side was melted pretty good. Lowell is a freelance writer who has been writing professionally since June 2008, with articles appearing on various websites. do the dash lights work? Ground connections or = orange rs = pink Audi A4 No. In the first case, separate wires come out of each tail light assembly and are attached to a metal frame. Without CONSULT-II 1. Then one single small wire runs to ground completeing the circuit. A bad brake light ground connection will result in the brake lights not working, or power crossfeeding through the tail-light circuit, preventing both tail and brake lights froms working at the same time. My 02 s10 has a bad ground wire. If not continue using the probe to test the wire back till you find the physical problem. Discussion Starter • #1 • Apr 9, 2010. bruceb58 Supreme Mariner. The utility trailer light kit we used (Blazer International No. The multi colored wires should be the power side. The pink with blue stripe is your brake light wire and it should run in the same harness. 2. 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Makes sense. If you want to get rid of those problems forever, switch over to LED lights and add an individual ground wire to each light. We had it diagnose and it showed P1780 code which says something about the transmission swith is bad. K.K. Top. 127680; about $54 from amazon.com) comes with a new harness. The easiest way to get the wire is to find it in the hatch and follow the harness towards the front. Should be just a single wire running front to back. This is the same procedure that could be employed from previous model years. The ENTIRE metal part of the vehicle is the neg side of the batt. The other wires on the tail light circuits are SUPPOSED to be getting ground. Bad switch – The tail light switch does not turn on or flickers and Reattach the ground connector to the body. Tail light housings should be secured to a metal surface (trailer frame), not wood or plastic. Asked by Wiki User. I wonder if the mystery wire is the ground, or if I should just use the Tail light (green) for ground, since to my knowledge, as long as the car is on, they should be too. Consumer writes in regards to insufficient exterior lighting at night. Ground for all 5 brake light bulbs is White-Black. ... Light Blue Wire - From Electric Shift Control Switch Gray Wire (From 4-High) To Instrument Cluster And Rear Anti Lock Brake Module. ... Grasp and crease the joined connecter afterwards in order to attach the wire of the tail light onto the electrical wire. ... ground locations. SUZCO 25 Foot 4 Wire 4-Flat Trailer Light Wiring Harness Extension Kit, 4-Way Plug 4 Pin Male & Female Extension Connector & Wishbone-Style with 18 Gauge White Ground Wire with SAE J1128 4.6 out of 5 stars 1,292 Chevy Silverado Tail Light Wiring Diagram - Collections Of Chevy Silverado Tail Light Wiring Diagram Collection. The ground wire should not be broken or cut as this will not deliver electricity to the sockets in which the bulb is fitted. The entire project takes just a few hours. There are applicable fuses, you need to check, if no voltage. We bought them for him and trying to wire them. 3 Wire Tail Light Wiring Diagram– wiring diagram is a simplified conventional pictorial representation of an electrical circuit.It shows the components of the circuit as simplified shapes, and the knack and signal contacts amongst the devices. Using sandpaper, remove any rust from the connector and the contact area on the car body. Add power resistors to the rear light circuits. If the probe lights up then your tail light socket ground is bad. 3. by Aotoyota » Tue Apr 06, 2010 11:26 pm . Did you run the wire from the negative battery post as I described? ONE wire out to what ever they trigger. You’ve already determined ground and tail wire colors in your 3-wire brake/tail light. 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