These worked great for adjusting the camber on my wheels!
PAC LD-10 10X Preamp+Ground Loop Isolator Adjustable Line Driver Signal Booster
19 January 2021
Simple device to increase the line output voltage
We needed more gain on the aux inputs in our Honda Pilot, and this works great for that. I ended up wiring a cigarette lighter adapter to it, so we can use it wherever we need to.