DVM-500Plus Installation Guide 002-0501-02 REV C
Page 12
Attach the mirror mount to the adapter plate with four #4-40 x 1/2" pan head screw and four #4 split
lock washers shown above. Position the mount with the notch up as shown. Attach the lanyard to
one of the top two screws and the other end attach to a structural rib underneath the headliner.
If the optional drop mount (002-05030-00) is required, secure the puck shown below to the drop
bracket with the two #6-32 x 1/2" pan head screw in the tapped holes to get the proper amount of drop
for your application. The amount of drop can be varied by 1/2" increments. Apply removable thread
locker to the threads before installing.
Attach the bracket shown below to the puck on the windshield and tighten the #10-24 set screw, then
attach the mirror mount bracket with the DVM to the puck on the bracket. Tighten the #10-24 screw on
the mirror mount.
To tighten the Big Ball DVM Mount, use a 7/64" hex key wrench or driver to carefully tighten
the two screws on the socket that are loose.
Start by tightening one screw 1/8" of a turn maximum.
Do not over tighten the hex locking screws in the middle of the Big Ball mount or the
DVM may break off the windshield when adjusted, possibly causing damage to the
windshield. Digital Ally is not responsible for damage caused to a vehicle windshield
due to over tightening of the set screws.
Check how tight the DVM mirror mount feels. If it is still loose, tighten the other screw another 1/8"
turn. Continue this process until the DVM has the correct feel. If the other socket is also loose, perform
this same procedure on the other socket. The socket nearest the windshield should be tighter than the
socket nearest the DVM, i.e. the socket nearest the DVM should move before the socket nearest the
windshield moves. Also keep in mind that if you are making this adjustment when the ambient
temperature is high, the mount will become tighter as the temperature decreases.
