92 E34 radio wiring question

[6670charger]

I'm installing a factory radio into my 92 E34. Matched all of the main wires that the radio has, but still have a couple left in the dash harness. Not sure where they go. They are the following:

yellow w/blue tracer
yellow w/purple tracer
blue w/red tracer
blue w/brown tracer

Right now, I have power and ground to the radio, rear speakers and the left front high range speaker working. Not getting anything from the right front high range or the front kick panel speakers. The car only seems to have six speakers total that I can see or find.

Any info would be very helpful.

Thanks.

[tim eh?]

Well the stereos in Europe aren't the same as the ones in NA, but I think Yellow is still Left and Blue is Right for you guys... and maybe the fronts share a ground.
ie FRtweeter and FRwoofer each get their own (blue)+ straight from the amp but share the - (which is probably the blue with brown stripe) - i'm totally guessing.