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Hi everyone, I am going to try a keep this as short as I can and thanks in advance for any and all help. I have tried to google for info on my problems but I am not having any luck.



I own a 94 900se 3dr that I got back in 98. Right after I got the car I pulled out the factory head unit and Clarion CD changer. Replacing them with a Clarion head unit and CD changer I already owned. I wasn’t able to find a wiring harness for my car at the time so I used a probe light and then worked out the speaker connections through trial and error. Everything worked great with the exception of the door speakers. I always assumed the door speakers were hooked up to a factory amp that was no longer being turned on. Anyway at the time I didn’t care because I knew I would be replacing them and installing an amp of my own. 6 month later I did and with the exception of having someone steal my system I have had no trouble with it since.



Now here I am years latter doing much of the same to a 95 900se convertible that is owned by a friend of mine who just happens to be my boss. He has had his 95 for almost 2 years now. His CD changer never worked, so this whole time he has been stuck listening to the radio or tapes. He finally got sick of it and ordered a wiring harness. So yesterday installed his Sony Mini Disk head unit in the car. At first we thought everything was fine. Hell his door speakers even worked with no added trouble. Or at least I believe they are.



However before long we began to notice that the SID was blinking off and then back on. At first I thought it was a lose wire but after messing with it on the back side I began to realize that it wasn’t a random thing. Every 20sec on the nose it “blinks”. We have also found that using the black out button is only blacking out the display and not the dash like it is suppose to. And then today we also discovered that after sitting all night the radio lost all of its programming.



Did something change from 94 to 95?



I remember pulling my SID out using 2 screwdrivers but no matter how hard I tried I could not get the SID out of the 95. Anyone have any tips on how to pull the SID out?
 

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Two of the wires in the wiring harness are for the car's information bus that transfers information between the radio, SID, and a couple of other things. One's positive and the other's negative. It sounds like you have one of them hooked up to something. There's a wiring diagram in Richard Bevan's Audio FAQ. Just figure out which ones are the bus wires and clip them. Your problem should be solved just like that. You've probably noticed the two holes in the front of your SID. Those are so you can thread a couple of screws in there and pull it out that way. I believe that 10-32 screws go in there nicely. They don't actually screw into the front panel, so don't worry about marring up anything.
 

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Thanks Jeremy, I actually found that site while I was searching. I just didn’t notice the links on the upper left that take you to the other pages. The site appears to be very informative.



It appears my downfall on the 95 convertible was in trusting the color matching of the plug that came from Crutchfield to the head unit. From looking at the pin out listed on his site it appears that I need to run my own constant. If I am not mistaken they have the yellow constant wire going to the buss+. No wonder it is messing up. I just hope it didn’t do any permanent damage!!



I also had no idea that the harness coming off the side was for the stock amp. I believe he touched on some of what he went through to hook that up. Since this 95 is a friends car and since he doesn’t own an amp I was wondering if it would be possible to hook the factory amp up to the RCA preouts on the head unit?
 

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Sure, you can hook up the factory amp to his aftermarket head unit. I did that same thing not too long ago. All you need is an 8-pin DIN plug, a stereo RCA cable, and a piece of wire. Chop off the RCA plugs on one end of the RCA cable, and solder the wires onto the appropriate pins of the DIN plug using Richard Bevan's DIN pin-out diagram as a guide, then solder the piece of wire onto the remote turn-on lead pin.
 
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