Trailer Stop & Turn Signal Converter

Published:2013/8/29 1:22:00 Author:lynne | Keyword: Trailer Stop & Turn Signal Converter | From:SeekIC

If you ever wondered why your trailer Stop/Turn signal lamps are so dim you are not alone. The answer is simply that the typical Stop & Turn Signal Converter/adapter drops a whopping 2.5V! This is VERY significant on a 12V electrical system. This DIY project provides the information you need build a simple, inexpensive converter that reduces this drop to a mere 0.5V @ 2A, and even has sufficient guts to power a 7.5A load. While this documents the most common 4 way (4 wire) system, it may be easily incorporated into more complex systems. Most automobiles manufactured today have separate Stop and Turn signals — the stop signals are Red, while the Turn signals are Amber. Unfortunately, most trailers do not include the luxury of amber Turn signals, but use the Stop signal also as a Turn signal. The converter takes both input signals and generates one output signal for the trailer. The logic for accomplishing this is simple, but tricky—check out the following truth table. Curiously, when the Stop and Turn signals are simultaneously applied, the trailer Turn signal is “inverted” so that when the vehicle Turn signal is On, the trailer Turn signal is Off, and vise versa.



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