Trim Tab solenoids?...Mercruiser 228

[jackman]

I want to identify two side by side items in the engine compartment, forward on the port side. A friend of mine said that they are trim-tab solenoids. I thought trim-tab solenoids were contained within the trim-tab pump unit. Trying to attach photo. Thanks for any advice.

 

[Bt Doctur]

Not solenoids, there capacitors for filtering a noisy alt output

 

[jackman]

Please excuse my ignorance but what is an alt output?

 

[Bt Doctur]

alt output is the charging voltage leaving the alt going to the battery.Sometimes is whines, whistles, makes funny crackling sounds in radios and causes interference with video displays, radar, chart recorder, etc.

 

[jackman]

Thank you for the info Bt Doctur