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SL/R230: Radio Antenna amplifier location?

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Old 08-18-2018, 11:49 AM
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Radio Antenna amplifier location?
Hi Everyone,

I've installed the Seicane unit in my 04 SL 500.. while not everything is perfect.. I'm actually pretty happy with the functionality.

I'm getting pretty horrible radio reception, and I'm thinking that I don't have the antenna amplifier working correctly. Everything seems wired right (wire from radio to power the amplifier is hooked up) and I got the right adapter to go from the antenna wire behind the dash to the radio. I'd like to find the antenna amplifier that combines the multiple antennas but I can't seem to find it. Behind the driver seat where the amp was is a harness that isn't hooked up to anything, which I'm wondering where it's supposed to go. Its a 25pin D-Sub connector.

Anyone have any idea where the amplifier is located? Even better, anyone solve this problem?
Thanks,
Tom
Last edited by tcalef; 08-18-2018 at 11:54 AM.
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Old 08-19-2018, 12:57 PM
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The FM antenna amp is at the base of the A-pillar on the left side.
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Old 12-31-2018, 01:23 PM
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SL500 R230 2003 160K Miles
I have same problem. Torn apart the trunk. Where is the A-Pillar.
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Old 12-31-2018, 02:14 PM
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The A-pillar is at the front windshield.
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Old 12-31-2018, 04:18 PM
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Talked about this, a week or so ago, about the same problem.
Seicane, bad radio reception.
Seems to be a real Seicane problem.
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Old 12-31-2018, 08:50 PM
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Originally Posted by Rudeney
The A-pillar is at the front windshield.

This the antenna harness supplied by Seicane. It has a Fakra connector for connecting the antenna. Cannot find where to plug it in
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Old 12-31-2018, 08:51 PM
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Have not looked under left A-pillar (outside windshield)
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Old 12-31-2018, 11:07 PM
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The antenna amp is right at the dash, under the inside trim on the A pillar. The antenna itself is embedded int he windshield.
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Old 01-01-2019, 12:55 AM
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Think I can plug the fakra connector into it?
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Old 01-01-2019, 10:53 AM
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I am guessing that is the intention of the Seicane, but I've never installed one.
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