I have a copy of a manual for these. I copied it years ago when we got one of these units for free.
But I can help you from memory on programming.
1. with system on and a tape in the vcr door, but not pushed in, just set it in enough to hold the door open.
2. hold the play and stop buttons for 3 seconds
3. let go of both buttons.
4. a display should now show up with menue options.
The telephone cord is for the external microphone cradle/charger/syncer. there is also a very thin wire for the second microphone that is used in car. When the system is on, place the external microphone (looks like a big pager with a slide button) in the cradle. There are two led's on cradle, the right led is charge status and changes color from red(dead charging) to orange, yellow and green when fully charged. The light on the left is green, when the microphone is turned on and placed in the charger, the light blinks fast until it syncs to camera. When the light stops it is synced. Test it by sliding the square button on the front of the mic down. It should activate recording. On the mic top is a window that has a tiny button on the right. that lights up the window in dark. With the mic on it should show an antenna signal icon on the left and flashes when it is out of range or needs synced. on the far right of the window shows battery status icon. When recording there is a icon in the center that looks like two circles with a band wrapped around them like a cassette tape. All three icons should display and light the window for a second, then light goes out and all three icons stay while recording.
On your monitor unit when recording, the rec red led should light up. Also in the back of the unit where cables plug in, there is an orange led. that lights up and stays on when the microphone is working and within range. On your monitor display, M2 should appear on the top right, M1 appears for the internal mic when recording.
The options on the display menu are for setting it up to record lock, so you wont tape over recorded video. Another is for radar inputs and to activate record when emergency lights or siren are activated. There are a few other options, ne hooks up to the brake switch and displays "B" when the brake is activated while recording.
The wires are to hook up to control box that activates lights and another to the siren.
Also the vcr case has to be closed and locked for the system to work.
The batteries go bad on the external mic and they sell replacements. The cradle for the mics also go bad. The cable to the camera goes bad, the display goes bad. All of which can be replaced.
We still use four of these in our cars. Mine has a rolling screen on the monitor, which is how I found this forum on google and signed up.
If you want a copy of this manual let me know, it is full size paper and an inch thick. Or if you need pics of how it looks installed or anything let me know.