Two brown wires at the amp?

[Paul-Z]

Hey guys - I have two brown wires with black stripes going into the stock amp...one with a larger diameter than the other. I’m assumin the larger wire is ground. Any idea what the smaller one is? I can’t find it on the electrical chart. It’s for an 86’ 325 if that helps.

Thanks

[Todd Black 88]

They are most likely both ground.

Why not measure it.

[Paul-Z]

Thanks.

Car is in the shop and I’m trying to get my stereo schematic laid out so when I get it back I can get right to work.

[Paul-Z]

Any other takers?