On the back of the stock head unit on my 2003 S2000, there are three plugs. One is the large blue one. The other two have one wire each and one of them has wire of a larger gauge. I am trying to connect the power for the antenna to my new head unit. I have connected 12 volts from the blue lead from the aftermarket harness to the yellowgreen wire that goes to pin 1 in the main car harness, as was recommended in the electronics forums, but this does get power to the antenna. The new head unit works great except I cannot get AM ( I like the news onve in a while).

Does anyone know what the other two connectors go to that plug into the back of the stock head unit? I don't want to hook up power to something before I know where it is going.

Thanks for any help. My e-mail is dfkline@earthlink.net

 

This link should answer nearly any question related to a deck install:

http://www.lucidautomotive.com/guides/aft/

 

I have the Multi-Radio DCI from Lucid and have figured out the installation. My stock head unit has two plugs that go to it besides the big blue one and the antenna coax connecter. Each has a plastic clip end like the blue one but each plug has one wire going to it. One wire is of a larger gauge. These connectors plug in right next to the main blue connecter. There is nothing on Lucid's site about these two connecters. The new Pioneer MP940P works just fine (except for AM reception) and everything else in the car seems to work normally. I just wondered what the other two connecters were for.

Thanks!