Have a set of xfit Bluetooth headphones....how do I reset them...they are vibrating and flashing whether they are on or off..

some chargers do that so it maybe still charging

In general, you can press the power key for a while. If the light flashes, it means this method works and your Bluetooth headphones are ready. Then, back to your iPhone 7 or 7 plus settings, locate the device name of your Bluetooth headphones in Bluetooth Setting, and click it to connect

Make sure the headphones are in the searchable mode or try searching from the headphones instead of the PC.

what do you mean, your headphone vibrates?

Make sure they have the same bluetooth stack, or at least a compatible stack.
To understand what it means, before you look up what stacks your devices have, look here:
Bluetooth stack

After charging, turn on headset by pushing the power button until the charging led turns red and flashes. continue to hold the button until the light flashes red and green. Go to your phone or device bluetooth settings page and search for devices, it should show up as TPRO HP500BT. Select device and select to Pair with this device. The light should start flashing red really fast, then it should be paired!

Go into the Bluetooth settings of your device and remove the headphones (forget them)

Power on headphones; press vol + & vol - to enter pairing mode (alternating red-green lights flashing); press and hold vol + & vol - for 8 - 10 seconds until the light flashed orange; the headphones are now reset to factory defaults; pair the headphones to your device.

I have to do this every time I install an IOS update on my iPhone.

I fixed my Headphones that would not stop vibrating by leaving them ON until the Power drain out and they stopped vibrating. Then Turned them OFF, plug in the charger they began to Vibrate again but after the charge they Stopped Vibrating and have been ok ever since

Yeah, they were quite well together i have them both.
To connect

1. Hold the switch button on the Free pulse until it flashes
RED & BLUE

2. Go to bluetooth setting in the T10 and add Headphones

3. Turn on headphones when turning on T10 should automaticaly connect.

go on ur phone and go 2 bluetooth pairing. before u click pair, turn on ur headphones and hold the multi function( button w/ play button and phone symbols) button until flashes blue and red lights simultaneously. once flashing, enter and start bluetooth paring on ur phone. the code is 0000. enjoy using ur bluetooth.