When I examine the end of the 2 pin power connect I have 3 wires exiting the cable sheath a red, a black, and a bare cable (with no colour plastic cover)? what do I connect the bare cable to, assuming I connect red to live (positive terminal black to earth neg terminal)? Do I solder the black and bare together? or does the bare line go onto something else?
Fuses and Breakers Attach the red or positive wire to a 5 amp circuit breaker. If the unit is connected directly to the boat’s battery, include a 2 amp in-line fuse. (In-line fuses are available at most marine supply stores.) The power cable includes a smaller "shield" wire. Connect this to a good ground.
Extending the Power Cable If you need to extend the power wiring by more than 10 feet, use a larger wire size. This will allow the wires to deliver the correct voltage in spite of the longer wire distance. For runs of 20 to 35 feet, use #14 AWG cable. If you extend the power wiring, be sure all electrical connections are solid and durable. Soldering is the best way to make these connections. Insulate all connections using heat-shrink tubing or electrical tape. You may also use crimp connectors or a terminal strip, but be sure to use good-quality marine-grade parts.
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Question: What are the extra wires used for on the power cable for my fishfinder?
I found this on the carmin website under questions and answers. I think your cable is ok to use according to this. -->
Not all of the wires in the harness are required for use. To connect the unit to the power source, only the black & red wires are required (black to ground, red to positive). Here are descriptions of the other wires in the harness:
The Blue wire is used for a NMEA data out connection to another NMEA compatible device. The fish finder outputs NMEA 0183 version 3.01. The receiving device must be compatible with this format and looking for the NEMA sentences DPT, DBT, MTM, or VHW.
The Brown wire is used for a NMEA data in connection to receive data from another NMEA compatible device.
The Yellow wire is used to connect to an external buzzer or alarm to alert you to any alarms which have been set to sound on the device. The Yellow GARMIN wire connects to the negative end of the external alarm. The positive return on the alarm will connect to the red positive wire of GARMIN.
The green, white, and any other colors present have no connection purpose related to your fishfinder. The 18 Pin connector wiring harness is used by several other devices which utilize these wires.
If the device is only being connected to power & do not require a NMEA interface, PC connection, or external alarm support, only the red & black wires are required.
Pins look like this: (Top view, not copper side) 1 2 3 4 5 6 7 8 9
1 = Thin white wire from thick white cable (Left input) 2 = Gray (Speaker out) 3 = Orange (+V return from volume unit to bass unit) 4 = Not connected 5 = Thin Red wire from thick red wire (Right input) 6 = Blue (+V power from bass unit to volume unit) 7 = Black (GND - if socket removed, solder 3 socket shield holes to each other or solder black wire directly leftmost hole) 8 = Not connected 9 = Shield copper from thick red wire
Shield copper from thick wire : Solder to GND or Left unconnected
Didn't you get an instruction manual with your fish finder? Fuse holders are not all alike. I'll try to explain how the common inline fuse holder is connected.
First, be sure there is no power to your wire. Locate a good place on the wire that will be convenient for you should you need to change the fuse. Cut the wire in that place. Strip off the insulation just far enough so that there is no bare wire showing when the holder is together. Twist the strands of the cable tightly together. Slide the endcaps from the fuse holder onto the wires first. Then put the crimp from the holder on the wire and squeeze with a crimping tool or pliers with "teeth", something that will dig the crimp tight in the wire. Do this for both cut ends of the cable. Put the fuse inside the holder and twist the endcaps back on. Pull lightly to see if you have a good connection. Reconnect the power and check that the fishfinder works.
hope this helps. If it does, I would appreciate a vote or comment. Thanks,
Probably put your family at risk of electricution . By connecting the live cables to earth you have effectivly made all the metal light fittings live. It is amazing that the fuse has not blown, This in itself is dangerous and you should have an electrician look at the wiring.
The correct wiring should be as follows.
Identify cables there should be 2 twin and earth (red black & copper earth) cables and 1 twin red and copper earth. (or 2 single red wires)
connect all copper earth wires suitably sheathed in green/yellow sleeving to earth lug.
Connect 2 black cables to neutral block.
Connect either single red (0r 1 of 2 reds) into live block.
connect remaining 3 reds into loop block.
You can do this two ways. ! Try disassembling the XLR plugs and examining the wiring on both ends of the cable. Pin 1= ground/shield, Pin2= hot(+ve), Pin 3= cold(-ve). Pins 1 and 3 should not be connected to each other (bridged) in any way. Neither should 1 and 2. 2 Use a volt ohm meter to test from each pin on one end of the cable to each pin on the other end and note the reading. Pins 1 and 3 and pins 1 and 2 should again not be connected.Hope this helps.
Normally more fish finders operate on 12VDC. The red is normally positive and black negative. As far as the wiring goes. I have never heard of this brand before but I would search around before hooking up the wires. Sometimes the colors are different than you think.
Yes you can. Basically the red wire goes to the fuse box connection. The fuse box should then be wired into the positive battery terminal. The black wire is the negative ground wire and needs to go directly back to your negative battery terminal or to a common negative buss bar.