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May. 3rd, 2005

Well, I got the trailer wired.


I spent a few hours trying to figure out the logic behind the connectors that are on the truck.

The trailer has a 4-pin connector. It's pretty universal, and has been for a long time. There are four wires: green, yellow, black (or brown), and white.
WHT Ground
BRN Low-intensity taillights & running lights
YEL Left brake & turn signal
GRN Right brake & turn signal


The truck has a connector on it specifically for a trailer, but when I started to futz it out, it wasn't wired at all right. The yellow wire was ground, and nothing else had anything on it at all. So I decided that I would have to go into the rear light units and splice into them.

Of course, it's not that easy. In the 'Sploder, the brake light and the turn signal are on two separate circuits, and you can't connect them together directly without possibly damaging the engine ECU.

Of course, I am a genius. A trip to Radio Shack for a few parts, and I had my solution: a simple diode matrix.


Four diodes and some soldering, and I was good to go. Well, there was a little bit of splicing wires into the taillight assemblies, but when all is said and done, it was good, and it works beautifully.


After that, I am just tired and feeling a little wonky, so I'll put off the 'Nards run until tomorrow.

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