Help Please with Macerator pump circuit

[AKBASSKING]

I am placing a question on this forum to see if I can get more folks to reply for an answer. ( I have this in the classics)

1986 300DB

Question: Is there a relay in line with the macerator pump?


I replaced my pump, turned the key in the head and nothing. Replaced switch, nothing. Ran test wire from battery to pump and it pumps.

I noticed the wires on the switch are a different gage than those on the pump which are a heavier gage (pump). I am thinking that the switch just activates the relay.

Any ideas? If there is a relay, where might it be located at?

 

[JVM225]

I don't know if mine is the same, I have an 87 30' Sundancer, but here is how mine works: There is a toggle switch mounted near the key for my macerator. The toggle switch must be in the on position to send power to the key switch. The key switch is like an ignition switch and needs to be in what would be the start position to run the pump.
This is my third season with this boat and I have never really used mine because I don't go offshore and have fairly ready access to pump outs, but I have turned the key for a brief second or two each season to make sure it works.
BTW: MIne is a manual head too, so they sound pretty much the same.