Step 1: What You Need.
-3 radio shack 15-position female VGA plug
-headphone style jack (female)
-multi. voltage DC power suply (3v)
Step 2: Beginning the Assembly.
To do this you need patients and an ammeter.
On my splitter, pin 10 is the possitive and pin 20 is the negative. In order to find the pos. and neg. wires within the cable you need to clamp your meter to pin 10 or 20 (you'll have to do both anyway), then, after cutting the cable in half, you have to strip back each wire and, with the other cable of your meter, eliminate each wire until you've found the one you want. then do it again with the other pin/wire.
Step 3: Attatch the Power Jack.
first tin the wires then solder them onto the jack.
Step 4: Attatch the VGA Plugs.
no order is needed but you will want to write down that wires go where.
Step 5: Finnishing Up
cut off excess wires from cable.