2020 Spark rear window defog

I have installed an FT-7200S into my 2020 Chevrolet Spark with a manual transmission and it works great. I am looking for information on how to wire the rear window defogger to come on with remote start. I see what I need to do with the control and I have the FT-OP500 programmer, but I do not know what wire I need to connect to in the car. Any help would be appreciated.