|Auxiliary Input to the OEM- Non-Bose Upgrade Head Unit|
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These mods were done on a Roadster, with the OEM 'Concert' Head Unit, and the Non-Upgraded Audio system.
I chose not to buy the 'Blaupunkt'adapter to do this. You could use this also, but if you are still using the OEM rears power amp, you would still need to tap into these line-in wires at the connector, and solder in a pair of RCA plugs. Some may think this is an easier alternative, and it certainly has merit, if you are at all concerened about taking the OEM head unit apart, as I did.
It compares to this part of the rear connector.
So, are you ready?
I took apart the back of the radio to get at the circiuit board for the rear connectors.
I soldered two molded RCA female jacks at these points. You don't really need to worry too much about doing this. Work carefully and take your time.
I ran the cables behind the circuit board, and out the bottom of the head unit. I re-assembled the head unit.
I had previously installed another head unit, that had 4 line level outputsm, fron fronts and rears, lefts and rights. To power the front speakers, I used a small, 20 W stereo power amp, that is mounted under the dash, behind the lower dash panel. This allowed me to replace the front speakers with a pair of MBQuart RSD-216 speakers. They have a 6.5" woofer, and a 1" tweeter, with a cross-over box. They are exact replacement fits for the OEM speakers. (That was a separate install that was not documented. It's easily done.)
So, if you want to do this, you will need to get this
adapter from Autotoys.
Note: There is NO OTHER way to get an auxiliary input int othe 'Concert' Head Unit, unless you use this type of an adapter.
You will need to remove;
In order to get the adapter plugged into the 13-pin DIN cable, and route it through the area behind the seat, you need to "Modify" the rear cubby hole. Here is a view of the cable and the rear of the cubby-hole.
I cut a small hole in the top corner of the back of the cubby hole for the connector. This material is not plastic, but a type of thin fiber-board like material. It cut easily with a hobby knife.
I ran the yellow 13-pin female adapter end through this hole from the inside of the cubby hole behind the seat. it fit snug in the hole. Then I plugged the male cable into the adapter.
I plugged a RCA male to 1/8" stereo mini plug adapter cable into the RCA females of the adapter. I replaced the cubby-hole door, and ran this plug out on the passenger seat.
Hit 'Play' on your auxiliary unit, and it should be playing through your head unit.