Instructions
Pull the tassel end of the reins down through the V in the bosal. Pull it to the right, and make one to three wraps around the bosal. (The number of wraps will depend on the size of the horse and the length of its neck.) When you have completed the wraps, you should be able to keep a loop in the reins while still leaving them long enough to reach the back of the saddle.
Bring a loop up through the bosal. Make an additional wrap, taking care not to twist the reins.
Pull the end through the reins, and make the final wrap: Pull the end of the rein back through itself, creating a tight loop that holds the reins to the bosal. Pull the reins tight to complete attaching them to the bridle.
How to Attach Reins to a Bosal
A bosal consists of a stiff piece of rawhide placed around a horse's nose to provide both fine control and stopping power without a bit. Bosals can serve as a good alternative for horses that do not like to wear a bit, or for riders who prefer to ride without one. Bosals make good training tools for young horses, and many horse show associations permit the showing of horses younger than five years in a bosal instead of a traditional bridle. In order for the bosal to function properly, however, you must attach the reins correctly.