Hi, I recently bought a 1975 V174 Glastron. I noticed that the trim gauge doesn't work. Stuck in the UP position. I see two wires coming out of the transom with bullet plugs that are not connected to anything. After lots of searching I see that I'm missing the sender indicator. I found one on eBay but have no idea how to wire it. Can anyone tell me and or send me a picture of where the wires connect to from the indicator to power to gauge. Thank you so much. This is my first bow and I don't have a clue! Happy Boating!!