Need to know the connector brand and the functions on each pin

No, you need the correct transducer.

The backlight is failing.

I have two Lowrance X 125 that I don't get any Power to.

You cannot get this wrong.. The power plug is a 24 pin connector and it will only fit in one place on the board. You cannot plug it in wrong as it will only slide in the correct way. The 4 pin connector is the +12volt connector, again, you cannot plug this in wrong either. The power connectors to the drives are also 4 pin but they are a flat plug which again, cannot be plugged in the wrong way around. The data cables are very different. IDE cables are a 40 or 80 pin square connector. Each connector may have a key which fits into a socket on the mating connector so again, it will not go in the wrong way. If it does not have this key, then the red stripe on the cable shows pin one and if you look at the mainboard connector, pin one is usually marked on the board.SATA connectors are profiled, that is they are shaped and will only fit the one way. the power connector is a different size (its bigger) then the data connector so you cannot get these plugs wrong either..

most cause by ant not working or bad cable or corrotion in connectors

I own a 1995 Four Winns and what you need is a Lowrance LSM-1 depth finder unit. It accepts the two pin lead from the transducer and send the depth reading to the dashboard display via the 6-pin connector. There is also a three wire harness (red/blk/wht) that connects to a power supply.

The reason I know all this is my depth finder fried a couple years ago so I removed the Lowrance LSM-1 from the boat in order to find a replacement. Unfortunately, this was an OEM part that is not available from Four Winns or any aftermarket source. Probably your best bet is to look in a boat salvage yard or purchase an aftermarket depth finder.

Hi- I have a 1996 Four winns boat with the same problem. I believe we are missing an adapter cable which goes from the depth cable to the instrument panel. I have not been able to locate this cable yet. If I find it I will let you know and can you do the same for me if you locate one?

John, my 330c was doing the same thing until I found a short in a totally separate system. It was a speaker for the stereo. As soon as I fixed it, the flashing problem went away.

upgrade it firmware usnig the download support are in the main page of ur product u will find it there!!

hi,your gps module-antenna is powered into 12 volt same as unit,have you traced your cable-fuses etc
john