manufactured by Metra (800) 221-0932. Give them a call. I spent quite awhile trying to figure out the wiring before call Metra. The part number (fom memory, so probably incorrect)is 99-9222. This includes 2 14 pin connectors. One of the connectors wires to the power inputs and grounds for the plug located right behind the stock radio head. The other 14 pin connector gets wired to the plug that otherwise would plug into the stock power amp (remove the panel below the steering column). It actually hadles speaker output. Do not run new speaker wire as suggested elsewhere - that is not necessary with the correct part from Metra.

All this assumes that you have a TD-6141 head with a 14 pin connector and din plug (not for CD controller) on the back of the head unit. The din plug is acutally the speaker output, being routed back to the pre-amp for output to the speakers.

The Metra part is nicely labelled. Every wire is labelled with its function (memory, +, ground, front speaker +, etc).

If you have questions, email me.

Neil Evans
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1997 850 awd, m56 5 speed manual, 1989 740 GL, m47 5 speed