First, let me explain. I have a 1995 32' Sunsation Dominator. It has HP500's. When it was built, the factory didn't install individual trim switches on the dash. Until I replaced the port side trim pump, there wasn't too much of an issue trimming the drives together. Now, the drives move at different rates, thus creating a trim problem. I have purchased the trim switches and four diodes. Has anyone added the trim switches, that would have a diagram/schematic showing how to wire them in the system. Thanks for any help!

The diodes will be needed if you are going to keep the single switch to trim both drives - they are wired in to prevent back feeding from the single switches. Each single switch will be wired to their respective trim pump, I believe Livorsi may have a schematic on their website.

Happy to help, just send me a PM.

GF?