Trailer tail stop turn light adapter

I put a hitch on my Volvo XC90 and realized I needed an adapter for connecting the lights on the trailer to. I could have bought one for about $45 at the time but decided to make one instead.  I saw some online using relays or discrete components but decided to use a logic gate for my design. It’s bin working great for 5+ years. I used  the fused light outputs. Post not finished yet.

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