2017 OWNERS MANUAL / 416
An audible “click” will  be heard. The latch should close with finger 
pressure. If the latch will not close freely, the ball is not fully inserted 
into the socket, it is over-sized or egg- shaped, or the latching 
mechanism is damaged. DO NOT FORCE THE HANDLE. If necessary, 
replace the ball with a quality unit that meets SAE specifications.
Insert the hitch pin into the hole on the side of the coupler. The hitch 
pin will not go in the coupler if the hitch ball is not seated properly.
DO NOT tow the trailer with the handle open or if the latch handle 
will not remain closed. Check to see that the coupler is locked.
If the latch is damaged, contact an authorized MasterCraft dealer 
for assistance.
Lights
Before each use make certain that all trailer lights are in proper 
working order to reduce the risk of serious injury, death and/or 
property damage.
The MasterCraft trailer harness was specifically designed to mate 
with the tow vehicle’s equipment. This harness is designed to disen-
gage the trailer brakes with the use of the tow vehicle’s harness.
NOTE: See an authorized MasterCraft dealer if the tow vehicle does 
not have  the  correct  trailer harness.
The trailer lights are brighter when the trailer is submerged. A 
sensor notifies the system when the trailer ramp is under water, and 
the lights will be at their maximum luminance. When the trailer  is  
removed  from the water, the lights will automatically dim. There is 
no consumer control for the system.
Keep Trailer Lighting System In Good Working Order: 
 
Be sure the white ground wire is properly connected to the master 
cylinder. Replace any parts that are damaged or worn.
A small amount of waterproof grease on the plug contacts and light 
bulb bases will help prevent rust and corrosion.
Before every trip, check for burned out or broken bulbs, cracked or 
broken light lenses, etc.
To Open The Coupler
Remove the hitch pin from the hole in the side of the coupler. Slide 
the lock/latch rearward which should allow the latch to spring 
upward. The coupler should unlatch easily. If not, the ball may be 
over-sized or egg-shaped, foreign matter could be lodged in the 
coupler ball socket, or the coupler is pushing on the hitch ball. Check 
to make sure the wheel on the tongue jack is raised or that the rig is 
not parked downhill. Correct these conditions, and then  try  to open 
the handle. If the tongue jack is forcing the front of the trailer up or 
the trailer is pushing against the tow vehicle, it can result in failure 
of the coupler to open properly.
To Close The Coupler
Place the coupler over the ball, lower the coupler and close the  
latch and slide the lock forward.
Trailer Runway Lights By XKGlow
XKGlow trailer runway lights are available on all MasterCraft Trailer 
Models. The lights are used for a number of dierent purposes, but 
generally they are designed to beautifully light a boat resting on its 
trailer. For operating instructions and troubleshooting the XKGlow 
runway lights, see the XKGlow Operating manual included in the 
Information Packet with your boat.