2011 187 S/D switches suddenly died

MEtoFL

Earlier today I was adding a couple speakers to my 187 SD I/O.  I had to tug and move a few wires during the install but the only electric I added was tapping into the court lights (right at the LED) to power the back-lit speakers.  When I finished, I discovered that all of my switches, including the master switch was dead (Nav lights, blower, blige, etc).  I exposed all of the wire packs under the console and fished my arm around in the speaker below the accelerator paddle next to the captains chair and I noted a few wires which weren't connected to anything, but didn't find the female connection anywhere, so I'm assuming they were intentionally not connected to anything.  I didn't move any of the wires enough to dislodge anything so I'm confused what happened.  I did disconnect and reconnect the stereo wiring a few times.  None of the pop-fuses on the dash have popped.  The boat starts fine and runs fine.  Trim works, and gauges all work.  Switches are all dead.  

Is there a master fuse somewhere for me to check or any tips for troubleshooting this issue?  Thanks in advance for any help! 

MEtoFL

MEtoFL

Update - I turned on the master switch and heard a clicking on/off sound coming from one of the power relays referenced in a similar thread with similar issues.  Headed to advance auto parts and picked up two new power relays and replaced both.  The clicking stopped, but still having the same issue.  No power at any switches.
Anyone with any ideas?   

cjjjdeck

You may have inadvertently shorted out something during the install and blew the main helm fuse/circuit breaker.  The main fuses are located back at the transom area near the battery.  Follow red wires coming off the positive battery terminal.

Picture #2 - I believe that to be a power source for auxiliary components (like fishfinder, sub-woofer etc)

Picture #3 - That is a ground/bonding wire (see wiring color chart below)

Picture #4 - That is the connection point if your boat was equipped for the optional transom remote for the stereo system 

Here's the ABYC Boat Wiring Color Chart.  It may help you identify the wiring you are encountering:
 

MEtoFL

Thanks - this is very helpful!
I checked two 5 amp fuses attached near the battery, but both were good (no break).  Should there be a larger fuse/breaker (like a 30amp?).  Also with the relay clicking on and off I assumed the relay was bad.    Is it possible that the aftermarket power relays I bought aren't compatible?  Here's what I purchased to replace the SANYOU power relays:
https://shop.advanceautoparts.com/p/dorman-conduct-tite-30-amp-12-volt-5-pin-universal-relay-88069/11223721-p?product_channel=local&store=9002&adtype=pla&product_channel=local&store_code=9002&gclid=CjwKCAjwrcH3BRApEiwAxjdPTTC9RQyZdyL0z9eWE6vx5z7IoG3tZ7D6Y8MZ41b5gm2FXkUQZB3JNRoCrw4QAvD_BwE&gclsrc=aw.ds

cjjjdeck

As long as the counter guy did the cross-reference right, I would imagine those are good.

There is a 30 amp fuse/breaker on one of the wires (usually "red') coming off the battery terminal.