stereo wiring, 86 Golf

I just bought this 86 VW golf with no radio in it. I looked inside and the audio wires are very weird lookin..i have to clue on what i have to do to get it connected to the head unit harness which looks like this..

so i just cut all the connectors and then just wire then to the matching color of the harness??

If you're going aftermarket, the new stereo will use different color wires.  You have to test the old one's for proper function.  Those speaker plugs are very similar to other German cars.  Do you have a fader in the center console, if so, the amplifier is in the trunk.  Now is the time to bypass it.  You can either run new wires to each speaker, or run them back to the trunk at the amp.  Many times you will not have wires for the rear speakers behind the deck.  You will have the front mids (doors) and front tweeters (dash).  You also may not have an accessory wire there, either, and may have to run your own.  If you're not comfortable doing all this, save yourself the headache and enlist the help of a professional.My ex once told me I have a perfect face for radio.