Audio: What kind of cable do I need...

…to connect from a Sirius satellite radio to the auxilliary port (I think it’s called a “line-in”) on my car radio?

Most likely 1/8" mini male to 1/8" mini male. Assuming the Sirius has a headphone slot and your aux port is like all the others.

The 1/8" mini male fits just fine on the car stereo end, but is too big on the Sirius end. I’ll shop around for a 1/16"-to-1/8".

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That’s very odd, because Sirius says that a 1/8" connector fits just fine

Yeah, my mistake. It was 1/8 to 1/8. Found one pretty easily.