its not the power that the linear puts out that damages engine ecms it the voltage spikes it creates when keying and unkeying the mic when your power and ground are not hooked correctly power direct to battery and ground to frame or battery and if your gonna run more than a 500 watt unit use a capaciter designed for car audio amps any car audio store cb shop or best buy has them the power your linear needs is always there and youll never have a voltage spike and remeber your antenna mount needs a good ground as well and if you want the very best cb the general lee is tops in my book and ive had em all over the years