03 BassTracker Under Dash Wiring Harness

[TMS4659]

So Im trying to trace my electrical problem, when i turn the key nothing happens, however all electronics (bilge, livewell, lights) all work. Motor has no power not even trim.
I found a 12 pin connector that had about 5 wires corroded so i want to replace this.

My question is the harness had 8 wires from the ignition and 11 wires coming from the back of the boat. Can someone help me with a diagram, or any input because im kinda stumped. I'm pretty young and this is my first major boat repair it would be very satisfying to do it myself.

THANKS for you help

 

[Silvertip]

Re: 03 BassTracker Under Dash Wiring Harness

Check the fuse (about 20A) under the engine cowl. The trim should work even with the key off.

 

[TMS4659]

Re: 03 BassTracker Under Dash Wiring Harness

So I fixed the trim problem (found a corroded wire). The fuse under the engine was blown however wen i replaced it it blew again.

Under the dash I have all the wires leading to the engine matched except for a BROWN w/ WHITE stripe, and TAN. these wires do not have anything to connect to, are they grounds?? I followed the wires to the engine and it looks like they are connected to each other right where the main cable plug is under the engine cowl.

02 Mercury 2-stroke 50 hp.