Anyone out there have a similar problem with wiring up an aftermarket cargo box with heated passenger grips and a tail/brake light? I’ve installed the box and hooked up the wiring as per the wiring diagram. The hand warmers work as they should, and so does the tail light, but I can’t get the brake light working. I’m a mechanic, not an electrician so I’m confused about the way the power runs thru the stock tail/brake light wires. This is what I’ve found so far……With the ignition on, the orange wire AND the red wire (see pics) both have 12V power. The orange wire feeds power to the tail light as it’s always on when the ignition is on. Here’s the confusing (to me) part…..When the brake pedal is pushed, the power on the red wire is gone. The middle black wire never has power, so I assume it is ground. According to the wiring diagram from the box manufacturer, Wes Industries, the brown wire coming from the cargo box is tail and the yellow is brake. I can connect brown to orange which gives me tail but how do I connect the yellow to give me brake? I’ve emailed the box maker but no response (yet). Big thanks to whoever can steer me in the right direction!
Can’t get new cargo box brake light to work
Anyone out there have a similar problem with wiring up an aftermarket cargo box with heated passenger grips and a tail/brake light? I’ve installed the box and hooked up the wiring as per the wiring diagram. The hand warmers work as they should, and so does the tail light, but I can’t get the brake light working. I’m a mechanic, not an electrician so I’m confused about the way the power runs thru the stock tail/brake light wires. This is what I’ve found so far……With the ignition on, the orange wire AND the red wire (see pics) both have 12V power. The orange wire feeds power to the tail light as it’s always on when the ignition is on. Here’s the confusing (to me) part…..When the brake pedal is pushed, the power on the red wire is gone. The middle black wire never has power, so I assume it is ground. According to the wiring diagram from the box manufacturer, Wes Industries, the brown wire coming from the cargo box is tail and the yellow is brake. I can connect brown to orange which gives me tail but how do I connect the yellow to give me brake? I’ve emailed the box maker but no response (yet). Big thanks to whoever can steer me in the right direction!
