FWIW, I had 1 switch on each of my Livorsi throttles.

Single switch on port throttle controlled BOTH drives.
Single switch on the starboard throttle controlled only the starboard drive.

Why? Pumps never move at the same rate.
Adjusting when planing, turning, use thumb for quick change due both to water condition via left switch.

Once ready to “cruise” fine tune starboard drive to match port OR tune to pitch bow according to cross wind or quartering seas.

It worked for me, and quite a few folks said they liked it too. Just sharing as it might be an option even for the BT wheel switches.

Just curious, are you setting up a BT PTT switch for the headset too?

Header? Not sure what you mean

The trim pumps are interconnected now so the individual switch sends power
to both pumps.

Second pic is how it should be if I didn`t blow the 2 relays in the bluetooth box.


https://cimg2.ibsrv.net/gimg/www.off...92c33fff7b.jpg
https://cimg7.ibsrv.net/gimg/www.off...8ab2968ee7.jpg

Sorry, autocorrect.


*Headset

https://cimg5.ibsrv.net/gimg/www.off...b1bcb1844c.jpg
You can still use it as is...still need 4 diodes....see pic :D

These should work for you.

https://a.co/d/9bvil2m

Sweet, ordered.. ! thank you gentelmen.
Lets see if that works lol

Wally, in your first pic you have the diodes facing the blue tooth box, in the second they are facing the pumps.. does it matter ?

I hate to say it but a 5w Zener is not what you need,

These should do the job.

Dan,

I haven't poured over the drawings and I won't pretend to understand what you're trying to do with the diodes, but YES.... It matters. That's the sole purpose of a diode; to direct traffic. Think of a diode as a check valve. It only allows flow in one direction. Now you get to decide which drawing you want to go by. :angry-smiley-038:

Thanks. Brad.

Yes the bands on the diodes in the first pic were wrong...i mentioned that in the text. The bands should be closest to the item you don't want back-feed from. So in your case it would be the trim pumps.....if one gets triggered you dont want that voltage and current to travel to the other pump...its like a one way valve.
If you are unsure its very easy to take a volt meter and test them.....with one direction you wont get any voltage reading and flip it over and you will get voltage.