dont have pic but seals trans fluid in trans where round main trans harness connects its yellow and goes around each pin let me know if anyone has it or where to get it
If you are talking about the main harness connector at the rear of the Alli just above the pan; the o ring is green and is the same as the 4L60E and 4L80E. It is available at any trans shop.
It it leaking because the internal wiring harness is bad. You cannot buy that seal separate. looks like you need an internal wiring harness and external harness repair kit.