Stereo Troubleshooting

[Reckless Amateur]

I have Kenwood stereo in my 91 Westy. On a recent trip, the fuse for the stereo on the main panel blew. I replaced it then realized after I did neither the right channel nor the rear speakers were working, though they had been previously. Thinking it was the head unit, I bought the same model used on ebay. When I plugged that in I had the same issue. The fuse on the head unit itself seems to be OK. I'm stumped. Any thoughts on how to track down the culprit?
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91 Bostig-powered Westy (automatic)
Philadelphia, PA

[tdivan82]

Try checking for continuity and resistance across each speaker, from the wires at the head unit. You should read something like 4 ohms for each speaker.

I would also check if there's any continuity between each speaker wire, and chassis ground, that could indicate a short i.e. wire got pinched somewhere.

Also check for resistance between the head unit ground wire and chassis ground, it shouldn't read more than about 0.2 ohms.

Confirm voltage at the head unit power wire is 12+ volts with engine off or 13+ volts engine running.
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82 Westy TDI (ahu)

See my Classified ad for a super deal on a Burley Motorsport Front Disc Brake Kit!

[4Gears4Tires]

Is there an inline fuse in the wiring in the dash?
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'87 Syncro Ferric Oxyhydroxide Superleggera Edition
'85 Westy Sciuridae Domus Edition

[Reckless Amateur]

[Red Ryder]

Sounds like you have ruled out a faulty head unit. And I assume your balance (L/R) and fader (F/R) settings are proper. I would check the connections between the head unit harness and each speaker lead next. Then check the connections at the rear of each speaker. You don’t by chance have a separate amp do you?
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“Most everyone’s mad here. You may have noticed I am not quite all there myself.” — Cheshire Cat, Adventures of Alice in Wonderland

“Scarlett” — 1990 Vanagon Carat Wolfsburg Edition (Tornado Red)
“Nigel” — 1999 Jaguar XK8 convertible (Alpine Green Metallic)