question on wiring?
 

I want to but a trim up/down switch on the back of the boat. (no more climbing in and out everytime I need to move the lower unit) but Got my self confused I see the wires coming of the pump purple,red and blue If I remember right but one of them goes out to the trim sensor should I slice in after or before that sensor?

Re: question on wiring?
 

Here is a troubleshooting STICKY that should help you out with the wiring & where to insert your transom switch.