In CA with a 1T where do you display your weight sticker?

The weight sticker goes on the rear rims of doors, or rear pillars per my recollection, although I have seen them on rear of front fenders as well.
They come with your declaration what gross COMBINED you are planning to have with your truck.
So think about declaration carefully becouse going over declared weight comes with hefty penalties.
Using my dually for campers only, I had it register as RV (DMV has different name for it) and I don't pay weight fees and have no sticker.

DMV never gave me a sticker for my F350 Dually when I registered it.I have yet to see the CHP stop a big pickup except to check for possession on a non commercial class A lic when pulling a heavy trailer ( 10,001 for a bumper pull or 15000 for a fifth wheel or gooseneck).

We have 3, 1 tons and none have a sticker.If DMV gave me a sticker, I would put it on, but they don't.
If I stop at a scale, they will run me off.

Yes. Now there are tens of thousands of these on the roads, and I have yet to see one with a weight tag, markings, etc., so perhaps the enforcement is lax. Maybe - when you have your camper in the bed - there is an exemption, maybe, its pretty ambiguous. But without it, loaded or unloaded, it appears not to be a pickup. I will wait until a law officer confirms this before I clog the truck scale lanes.

There are a number of people on this forum with late model one tons. Do Y'all just ignore it?

Oops..... if the GVWR is more than 11,500 it is not a pickup. Check 471 CA vehicle code. A box type bed less than 9 ft and a gvwr less than 11,500 and an unladen weight less than 8,001 lbs to be a pickup. All three not best two out of three. If you need a weight sticker then you need a CA number (34507 CVC). Don't forget a Motor Carrier of Property Permit (34600 CVC). If you are towing a recreational vehicle not commercially then you would not have to stop at scales. Sort of sums it up.........