MI WTB, taillight male plugin needed

[68c10airstream]

I need a short section of taillight harness. From the male end back maybe 10". I hate to by a taillight harness and cut it up to get the male end from it. I'm doing a trailer harness adapter. I'm teeing into the harness where the taillight harness plugs into the rear cross member area. I have the female side, so i can make a short tee harness and use this signal to turn on trailer relays. This modification allows a trailer to be plugged in, not require a heavy duty flasher, and no difference in flasher cycle rate between trailer plugged in or disconnected, and this modification won't load the original harness much at all (about a 1/4 amp). Thanks in advance, Brian Fuller.