This is what the inside of the WRT54GL looks like. The back of the router is the top of the image. Our serial port is in the front portion on the right hand side above the empty header.
A closer view of the serial port header.
This is a picture of the chip we used to make the signal strong enough to reach the terminal annex.
This is the final version of the faceplate of our router, with the two external serial ports attached and ready to go.
Now that everything is connected we can re-assemble it. First you put on the back/top half.
Next you can carefully install the front half (making sure not to break any of the wires we have).
And now you have a WRT54GL with two serial ports installed and ready to run you own operating system.
