i have a new spektrum ar6115e, removed the connectosr from the dynum reciver and put them in the new reciver. i had a single connector the goes to the gyro. now sure were to plug it to.

If your talking about the plug with the single wire from the gyro, yellow wire on my gyros, it goes into the "gear" slot on the AR6115E which I believe is channel 5.

ok thanks. whitch one of the 3 pin does plug into<br type="_moz" />

It goes onto the lower pin, i.e. the signal pin.  The top two pins are the neg. and pos. power feeds.  If I remember correctly this is for adjusting the gyro gain.