i got a lowrance x88 and it had no wiring instructions. i need to know how to wire up the power cord. it has three sets of wires comeing out of the one plug, one has a small red and black and bare wire, the other has a small blue, yellow, orange, and bare wire, and the last set are bigger and it has a red, white, and black wire. the small red,black and bare wire has a tag that says mnea 2000 power and the blue , yellow, orange, and bare say rs-232 comm.  i do not know where these wires go .  thanks for any help.

This link should take you to a set of 50 questions concerning your unit.  Somewhere in there you should find out all you need to know and be able to download a manual.  Good luck.

http://primus.lowrance.com/support/answerPagging.do

no help. i downloaded the manual but it doesnt show the wiring like that, it just shows a black and white. thanks for the info though. maybe somebody that has one with simular wireing could help.

The small wires are to hook your unit to other devices like a gps or radar.  You should only need to hook up the larger power wires.  Black is usually Negative and Red positive.  Try that and leave the white alone.  If that does not get you power you may need the white hooked to positve.  I can't believe the manual does not diagram this out.  Are you certain you have the correct harness for this unit?

Good Luck,

TomD.

From the manual

Power Connections

The unit works from a 12-volt battery system. For the best results, attach

the power cable directly to the battery. You can attach the power

cable to an accessory or power buss, however you may have problems

with electrical interference. Therefore, it's safer to go ahead and attach

the power cable directly to the battery.

CAUTION:

When using the unit in a saltwater environment, we strongly recommend

that you shut off the power supply to the power cable when

the unit is not in use. When the unit is turned off but still connected

to a power supply, electrolysis can occur in the power cable plug.

This may result in corrosion of the plug body along with the electrical

contacts in the cable and the unit's power socket.

In saltwater environments we recommend you connect the power

cable to the auxiliary power switch included in most boat designs.

If that results in electrical interference, or if such a switch is not

available, we recommend connecting direct to the battery and installing

an inline switch. This will let you shut off power to the

power cable when the unit is not in use. When you are not using

the unit, you should always shut off power to the power cable, especially

when the power cable is disconnected from the unit.

If possible, keep the power cable away from other boat wiring, especially

the engine's wires. This will provide the best isolation from electrical

noise. If the cable is not long enough, splice #18 gauge wire onto

it. The power cable has two wires, red and black. Red is the positive

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lead, black is negative or ground. Make sure to attach the in-line fuse

holder to the red lead as close to the power source as possible.

For example, if you have to extend the power cable to the battery or

power buss, attach one end of the fuse holder directly to the battery or

power buss. This will protect both the unit and the power cable in the

event of a short. It uses a 3-amp fuse.

Power connections for the sonar unit.

CAUTION:

Do not use this product without a 3-amp fuse wired into the power

cable! Failure to use a 3-amp fuse will void your warranty.

This unit has reverse polarity protection. No damage will occur if the

power wires are reversed. However, the unit will not work until the

wires are attached correctly.

An optional 8-foot, CA-4 external power cable with a cigarette lighter

adapter is available from Lowrance.

Sounds like you may have a generic cable not the one specific for your unit.  Try red and black and tape off the others.

Tom D