Installing heated seats

Hello all
I am installing a aftermarket heated seat kit I wanted to test them before installing in seat and it is getting the proper volts around 13.7 but they do not seem to be getting very warm . They are warm at the bottom but further up the pad not so much. Do you have to be sitting on it to get the warming going?

Thanks

 

What do the instructions say?

 

Wow why didn't I think about that. As with most products these days the kit came with less the stellar instructions.

I wanted to hear from others who did the upgrade as to what their experience was.
I know kits are different but I would assume they all work the same way.

 

How about the brand and model in case someone does have the same one.

 

Soyjoy from Amazon
Never heard of them but got as good of reviews as any