you will need
to obtain a hand-operated switch from the manufacturer
or a camera store, and splice it onto your Conceptus
Tongue Switch or Bite Switch.
1) Cut the wire on factory switch
at least 2 inches (5cm) from the plug. Strip the main
insulation about 3/4 inches (2cm) and the individual
wires about 1/2 inch (1cm). There will usually be between
2 and 10 wires inside the main insulation. Isolate these
so none touch the others.
2) Insert plug into camera and set
camera to the mode in which you intend to use it. Cross
the bare wires with each other, one at a time, until
you identify the ones which operate the shutter and
autofocus, and mark them accordingly. Any wires exposed
which serve no obvious function should be cut short
and covered with tape or glue.
3) Cut the plug off of the Conceptus
switch and strip the outer and inner wires to allow
1/2 inch (1cm) exposed wire. Connect and solder the
wires you have identified on the factory plug to the
wires on your switch, isolating them with shrink tubing
or tape. The "ground" wire from the plug should
connect to the bare copper wire on the switch. The "shutter"
wire should connect to the white wire. The "autofocus"
wire may be connected with the copper wire for constant
focusing or to the white (or red) wire for focusing
with each individual shot. Tape or shrink-wrap the assembly
securely. You might also consider connecting the plug
and switch with some common plug/jack combination so
you can change switches as needed without cutting the
wires. "RCA" plugs work well, and are available
at most electronics stores.
4) Test out your new system thoroughly
on the ground to verify satisfactory functioning.