Say I just recieved a pair of used Baja Aux side lights, question, is the stock DS650 except these, or do I need a wiring harness?? Meaning the guy forgot to ship one?

 

I don't have a Baja so I don't know how those lights are wired in. But I do have a link for you that will show you how to wire in aftermarket Aux. Lights. It's A site Im still building but there is a lot of good info there. Just put your mouse over the do it yourself button at the top of the page. the go down to lighting. That will bring up the page that will give you very good directions on how to hook them up.
The Directions were given to me By our very own JsDs (Jeff) from this forum.
Do It Yourself Site

 

My reg ds has the plugs already, but mine is a reg 2003. If you have an early model ds you probably want have the plugs in your harness. If thats the case I would just hard wire them and mount a toggle switch on the dash.