I used this for my Alpine head unit. Probably the same?

https://www.amazon.com/gp/aw/d/B0007WRQQ2?psc=1&ref=ppx_pop_mob_b_asin_title

Also installed ground loop isolators.

https://www.amazon.com/gp/aw/d/B077Y5DLBB?psc=1&ref=ppx_pop_mob_b_asin_title