[jyl]

Oddball question here. I have been looking for a switcher that will allow switching from car audio source A or B to the amplifiers. The complication is that each source is five channels (LF RF LR RR sub). The switchers I’ve found are only two channel, and seem to be made for home audio.

One could build a switcher, but I haven’t found any 5 pole 2 throw (5P2T?) switches. I’ve seen an Instructable for building a 5 channel switcher, but it used three toggle switches and it seems silly to have to throw three switches, plus integrating that into a car interior won’t look very “factory”.

So, I thought a pretty easy way to deal with this would be to use standard auto relays of the SPDT sort, one relay per channel, and energize them all with a single switch.

Will this work? Will the relay coil introduce noise into the source signal?