It does not appear as if your Subaru has a designated fuse for just the antenna. I would check on the radio fuse or look for an inline fuse. I attached part of the wiring diagram as an image. The complete wiring diagram from the service manual is available [http://www.keepandshare.com/doc/3117115/1990-subaru-legacy-wiring-diagrams-pdf-september-3-2011-2-12-pm-4-6-meg?da=y|right here] for you to download. Hope this helps, good luck.
It does not appear as if your Subaru has a designated fuse for just the antenna. I would check on the radio fuse or look for an inline fuse. I attached part of the wiring diagram as an image. The complete wiring diagram from the service manual is available [http://www.keepandshare.com/doc/3117115/1990-subaru-legacy-wiring-diagrams-pdf-september-3-2011-2-12-pm-4-6-meg?da=y|right here] for you to download. Hope this helps, good luck.
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