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2savage4you

  • Karma: +14/-1
Installing a new wiring harness
« on: December 16, 2007, 07:43:49 AM »
 Im looking at a new wiring harness for my boat and was just wondering how difficult it would be to wire it up.  Are they marked for what wire go's where and is there something i should look for besides what engine i will be running?

I will be buying new gauges along with the wiring kit.   I was going to use the wiring harness and gauges from a boat im selling, but i dont want to half ass this project im doing.

Im looking at the kit and gauges from cp performance. Has anybody else used there kit to wire there boat ???

Thanks

2sav
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Jetaholic

  • Karma: +3/-0
Re: Installing a new wiring harness
« Reply #1 on: December 16, 2007, 08:12:19 AM »
Im looking at a new wiring harness for my boat and was just wondering how difficult it would be to wire it up.  Are they marked for what wire go's where and is there something i should look for besides what engine i will be running?

I will be buying new gauges along with the wiring kit.   I was going to use the wiring harness and gauges from a boat im selling, but i dont want to half ass this project im doing.

Im looking at the kit and gauges from cp performance. Has anybody else used there kit to wire there boat ???

Thanks

2sav

They are pretty easy to install. I have the same harness in my boat, however I pulled it apart to add wiring to it since I added a few things to the boat that the harness didn't have wiring for. But they come with instructions that show you which wire goes to what and they're pretty simple to read/understand. If you need any help while installing it I could help you out.
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To err is human, to forgive divine...except for running Fords ;D

F - Found
O - On
R - River
D - Dead

BOOST

  • Karma: +25/-0
Re: Installing a new wiring harness
« Reply #2 on: December 16, 2007, 08:40:46 AM »
They are pretty easy to install. I have the same harness in my boat, however I pulled it apart to add wiring to it since I added a few things to the boat that the harness didn't have wiring for. But they come with instructions that show you which wire goes to what and they're pretty simple to read/understand. If you need any help while installing it I could help you out.
After you buy your gauges,go pick up some wire,red,black ,yellow,and new connectors,run one wire at a time if it will be any easyer for you.if youneed more help bring it down and we could do it in about a half a day.

GAWnCA

  • Karma: +1/-1
Re: Installing a new wiring harness
« Reply #3 on: December 18, 2007, 07:56:50 PM »
I went to Napa Auto Parts and bought the wire in spools and plan on making my own.  The harness that is install has so many extra wires taped back on themselves that cleaning it up would be a bigger pain in the a$$ than making a new harness.  Napa had every color  I'll need and Summit has all the colored flex tubing.

My main thing is wiring up at the motor so the harness can be a clean run to the dash.  Single wire sending units and ignition wires, then the alternator wiring and the starter.
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~Greg
Forgive your enemies.  It messes up their heads.

speedymopars

  • Karma: +6/-0
Re: Installing a new wiring harness
« Reply #4 on: December 18, 2007, 08:19:09 PM »
Don't forget a good ground wire. The chassis in a car does this, but in a boat, you will make sure this is a thick gauge wire. Otherwise all of your gauges may read low, and the dash lights may be too dim.
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21' 74 cheyenne 543 Mopar Berkeley Jet Place diverter

FORKEDUP

  • Karma: +4/-0
Re: Installing a new wiring harness
« Reply #5 on: December 18, 2007, 08:40:35 PM »
I went to Napa Auto Parts and bought the wire in spools and plan on making my own.  The harness that is install has so many extra wires taped back on themselves that cleaning it up would be a bigger pain in the a$$ than making a new harness.  Napa had every color  I'll need and Summit has all the colored flex tubing.

My main thing is wiring up at the motor so the harness can be a clean run to the dash.  Single wire sending units and ignition wires, then the alternator wiring and the starter.

thats what i did for mine, bought a bunch of diff color wire, sat down and made a list of everything from gauges to ignition to alt to starter anything that needed a wire to it was written down, then drew out a generic pic of boat with where everything is located and made my own schematic (sp?), transfered that to a new piece of paper with colors for wires and starte measuring and cutting, loomed everything together to run it, looked at the schematic and new where every wire went to, and if ever there is a problem i can easily find it.  i hope ;D, second time i have done it to this boat, easy both times, just wanted cleaner the second time around
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BEAUTY IS ONLY A LIGHT SWITCH AWAY
26' kachina force 496bbc
19' eliminator daytona 496bbc (still in my heart)
21 Commander, blown 454, berk pump.

GAWnCA

  • Karma: +1/-1
Re: Installing a new wiring harness
« Reply #6 on: December 18, 2007, 08:45:18 PM »
You're right.  I just failed to list it.  I plan on running a #12 to the dash and attach to a grounding block.  I'll be installing a block at bother ends of the harness, one on the motor and another behind the dash.  This way I can isolate or swap out or add something if I think of it later on.  I'll add a pull or fish line in the event I need to run another wire.  I always do an overkill when I do wiring.
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~Greg
Forgive your enemies.  It messes up their heads.

BOOST

  • Karma: +25/-0
Re: Installing a new wiring harness
« Reply #7 on: December 18, 2007, 08:49:40 PM »
Don't forget a good ground wire. The chassis in a car does this, but in a boat, you will make sure this is a thick gauge wire. Otherwise all of your gauges may read low, and the dash lights may be too dim.
The best ground would to go straight to the battery or off the block,run one black ground wire to all of your gauges instead of one indivisule wire to each gauge.

speedymopars

  • Karma: +6/-0
Re: Installing a new wiring harness
« Reply #8 on: December 19, 2007, 09:56:59 AM »
You're right.  I just failed to list it.  I plan on running a #12 to the dash and attach to a grounding block.  I'll be installing a block at bother ends of the harness, one on the motor and another behind the dash.  This way I can isolate or swap out or add something if I think of it later on.  I'll add a pull or fish line in the event I need to run another wire.  I always do an overkill when I do wiring.

I would at least do a 10 gauge for both general power and ground, esp if you have a std radio.

For a real stereo with an amp, use 6 or 4 gauge.

On the wiring, I always run 2-4 more wires than I think I need - I usually end up using them!
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21' 74 cheyenne 543 Mopar Berkeley Jet Place diverter

GAWnCA

  • Karma: +1/-1
Re: Installing a new wiring harness
« Reply #9 on: December 19, 2007, 10:34:11 AM »
I would at least do a 10 gauge for both general power and ground, esp if you have a std radio.

For a real stereo with an amp, use 6 or 4 gauge.

On the wiring, I always run 2-4 more wires than I think I need - I usually end up using them!

 ;D ;D ;D  A real stereo?  Sounds to me like you're setting up for a full blown concert.  Do you include 24" wolfers too?  ;D  I've got a regular stereo with a CD player.

I've got the 10 gauge wire for power and ground.  Also have a 30 amp breaker that I bought from a electronics store for a lot less than what the marine shops want for the same thing.  I may run a breaker box or fuse box under the dash as well, although I don't know that it's really needed.
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~Greg
Forgive your enemies.  It messes up their heads.

2savage4you

  • Karma: +14/-1
Re: Installing a new wiring harness
« Reply #10 on: December 19, 2007, 10:38:11 AM »
My first jet boat i had a Real stereo in it but it didnt leave much for room :(

This time i will only have a cd player some nice speakers and thats about it.  I want the room for the cooler and shit not so much the other people ;)


2sav
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GAWnCA

  • Karma: +1/-1
Re: Installing a new wiring harness
« Reply #11 on: December 19, 2007, 10:41:51 AM »
My first jet boat i had a Real stereo in it but it didnt leave much for room :(

This time i will only have a cd player some nice speakers and thats about it.  I want the room for the cooler and shit not so much the other people ;)

2sav

My feelings exactly.  The music is for me not everyone on the lake or river.  Besides, I don't want to run any more wire than I have to. 

Greg
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~Greg
Forgive your enemies.  It messes up their heads.

TJS Nordic

  • Karma: +2/-0
Re: Installing a new wiring harness
« Reply #12 on: December 19, 2007, 10:57:43 AM »
I built my own using the Boating Industry Assoc wire color chart(google it). I got all my wiring products from McMaster-Carr.
T.J.
www.tjsperformance.com

speedymopars

  • Karma: +6/-0
Re: Installing a new wiring harness
« Reply #13 on: December 19, 2007, 02:03:17 PM »
;D ;D ;D  A real stereo?  Sounds to me like you're setting up for a full blown concert.  Do you include 24" wolfers too?  ;D  I've got a regular stereo with a CD player.

I've got the 10 gauge wire for power and ground.  Also have a 30 amp breaker that I bought from a electronics store for a lot less than what the marine shops want for the same thing.  I may run a breaker box or fuse box under the dash as well, although I don't know that it's really needed.

Naa, just 15's :-)  10G wire is good for 65A, as opposed to 12 gauge which really is only supposed to handle 40A.

I would always be on the safe side and use the breakers - electricity can cause fires - usually a bad thing in a boat. If something shorts under the dash, there is always the possibility that the heat generated will melt the insulation wherever the worst spot is ( you know, like where the gas is!).
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21' 74 cheyenne 543 Mopar Berkeley Jet Place diverter

wanabe

  • Karma: +6/-31
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2nd Amendment: America's original homeland security act!

Brad @ SCJB

  • Karma: +255/-0
Re: Installing a new wiring harness
« Reply #15 on: December 19, 2007, 03:48:33 PM »
  • Boat #1: 1978 Liberty
  • Boat #2: 1982 Eliminator Sprint
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wanabe

  • Karma: +6/-31
Re: Installing a new wiring harness
« Reply #16 on: December 19, 2007, 03:50:52 PM »
look what the cat drug in.....wb timmy.

I know, I know; I've missed a lot of stuff over the last month or so (not really, flytime keeps me briefed, but it's not the same as being here).
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2nd Amendment: America's original homeland security act!

 


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