u/cami88ar

I bought a nice Chevy Spark LS last week and the previous owner told me that she installed the carplay and was running perfectly, but then she had to put new battery to the car and after that the carplay never started again.

I disarm it and saw that the fuse (10A) OF THE CARPLAY was blown. I put a new one but when i connected the battery car, t blown again.

Does anybody know what problem could possibly be? thanks!