Loud pop from speakers when I trim

[Dafinman]

I just installed a new amplifier and am getting a loud pop from the speakers when I trim my outdrive or trim tabs. I have the power wire coming from the output from the battery switch and the ground wire going to one of the batteries. I am parralleling the trim wire most of the cable run but I would be surprised the power ground wires would cause the amp to do this. My main guess is that I have an abnormally long rca cable an it is acting like a type of antenna.

What do you guys think?

Also another question. The head unit's remote turnon lead is connected to some wire even though there was no amp before I added one. Any idea what this might go to?

 

[Dafinman]

Come to think of it I had this same problem on my old celebrity and the power cables never came near the trim wire. Surely someone has had this happen too.

 

[douglee25]

Double check your ground wire. Add a second ground as well.

Doug

 

[AudioSpecialties]

I just fixed a customers boat with this issue, They had the pwr/grd wires and the trim power running off the same battery, Try moving the amp wiring to a different battery

 

[Dafinman]

Thanks I'll try that next time I'm out

 

[mrsrobinson]

Same issue with us, only with our VHF, turned out to be a ground problem on the head unit.