Head scratcher

[alberatzi]

Hey everyone! I have a 1987 Ranger 360V with a 175 Mercury Black Max outboard. I changed my starter the other day & heard a click. Didn't have time to start the boat right then, but when I came out to start it several hours later, both the key switch & stern-mounted trim control were dead! I checked all the fuses in the box & they were good. I even checked the 2 on the motor & they were intact as well. All the batteries tested good. Needless to say, any wisdom on where to go from here is deeply appreciated!

[billnorman1]

When a new problem happens after you fixed something you goofed while fixing. See if the + leads on the solenoid are tight, check your battery cables call a friend that knows electricity.

[lpugh]

POst this in the mercury 2.5 L forum
This sounds like a poor battery cable connection, test and clean every connection point on batteries and motor including slave solenoid and starter.
Voltage drop test are in order, google how to do this

[Alex from GA]

Can you turn the flywheel by hand?

[hankgun]

Do you have a circuit breaker on your starting battery? The click may have been a circuit breaker on your battery. If it was, after you reset the breaker, check that you have all the wires connected correctly and that you haven't pinched a wire somewhere. Let us know what you find out please.