The Hull Truth - Boating and Fishing Forum

Go Back   The Hull Truth - Boating and Fishing Forum > BOATING FORUMS > Marine Electronics Forum
Search

Notices

Random Quote: Give a man a fish and you feed him for a day. Teach a man to fish and you get rid of him on the weekend.
Reply
 
Thread Tools Search this Thread
Old 04-02-2011, 09:15 PM
  #1    
Senior Member
 
Join Date: Jan 2010
Posts: 1,103
Default Cutting and re-splicing transducer wire??

I am getting ready to replace the rigging tube on my CC. (For those who may be using different terminology, the rigging tube I am referring to is the protective plastic/rubber sheathing around the cables, fuel lines, etc which come out of the boat and into the motor).

Anyway, on with the question:

My depth sounder transducer wire currently runs along the outside of the rigging tube and is held into place via cable ties. This looks kind of cheesy and I would like to run the wire up through the rigging tube into the aft transom and then to the bowels of the boat.

The trouble is, the transducer itself doesn't have a disconnection for the wire itself so the only way I could run this wire the way I want is to clip the transducer wire, run the end through the rigging tube and re-connecting the wires with butt splices.

What sort of harm/problems am I inviting into my life if I do this? Is this transducer wire "special" in any way so it can't be snipped?

Any advice from the electronics gurus would be greatly appreciated.

-blueflyer
blueflyer is offline   Reply With Quote
Old 04-02-2011, 09:43 PM
  #2    
Senior Member
 
Join Date: Oct 2009
Location: Idaho
Posts: 511
Default

You can do this successfully if care is taken during the splicing.
I would cut the end with the connector and reconnect using new parts as a first choice.
Second choice would be to use a splice box mounted terminal strip. You want to maintain the ground shield integrity through the splice.
Third choice is cut the cable and butt spice. Stagger the conductor ends so all the splices are not stacked in one spot. I would solder the connections using a western union splice and use heat shrink tubing..
You may encounter 2 pairs that have individual shields. Make sure to extend these over the splices and
solder them on both sides of the splice.
Just establish the connections as they were before the cut and make sure the shields cover the splices
and maintain continuity through the splice. I like to tie in a strain ribbon from 2'' above and 2'' below the splice under the final outer shrink tube. This will keep strain to a minimum in case the cable is pulled.
jetboat69 is offline   Reply With Quote
 
Old 04-03-2011, 05:34 AM
  #3    
Admirals Club
 
Join Date: Feb 2010
Location: Cudjoe Key, Fl
Posts: 473
Default

Garmin has an extension cable. Would that work ?
__________________
That's my 2 cents. And you can keep the change.


2010 Hydrasports Vector 22 CC. BREATHLESS AGAIN
1987 Boston Whaler 13. GASP
Gillotine is offline   Reply With Quote
Old 04-03-2011, 05:39 AM
  #4    
Admirals Club
 
Join Date: Feb 2010
Location: Cudjoe Key, Fl
Posts: 473
Default

Quote:
Originally Posted by jetboat69 View Post
You can do this successfully if care is taken during the splicing.
I would cut the end with the connector and reconnect using new parts as a first choice.
Second choice would be to use a splice box mounted terminal strip. You want to maintain the ground shield integrity through the splice.
Third choice is cut the cable and butt spice. Stagger the conductor ends so all the splices are not stacked in one spot. I would solder the connections using a western union splice and use heat shrink tubing..
You may encounter 2 pairs that have individual shields. Make sure to extend these over the splices and
solder them on both sides of the splice.
Just establish the connections as they were before the cut and make sure the shields cover the splices
and maintain continuity through the splice. I like to tie in a strain ribbon from 2'' above and 2'' below the splice under the final outer shrink tube. This will keep strain to a minimum in case the cable is pulled.
Jetboat, how can you maintain the grounding effect of the shield if you cut the cable.?
I ask because in my ignorance, I cut the shield while disabling the temp sensor.
__________________
That's my 2 cents. And you can keep the change.


2010 Hydrasports Vector 22 CC. BREATHLESS AGAIN
1987 Boston Whaler 13. GASP
Gillotine is offline   Reply With Quote
Old 04-03-2011, 08:06 AM
  #5    
Senior Member
 
Join Date: Oct 2009
Location: Idaho
Posts: 511
Default

To Splice the cable, remove 6" of the plastic outer cover first to expose the conductors. There may be a metallic shield around all of the conductors or individual pairs, depends on the cable make up.
Push the metallic mesh as far as possible to each side. Some cables use a foil type shield and you can re-wrap with HD aluminum foil.
I have a bunch of coax cable scrap that I rob the shields from and you can probably do the same. Go to a computer store, cable installer or buy a short cable at Home depot. You may already have some surplus computer cables you can use.
After you splice the conductors push the shield back together and add a spot of solder.
The ground supply on the shields is generally connected at one end only.
I solder the shield on both sides of the splice with a spot of solder being careful not to melt the inside conductor jackets. Take some practice.
Treat the metallic shield as a conductor and you should be good to go.
jetboat69 is offline   Reply With Quote
Old 04-03-2011, 08:13 AM
  #6    
Admirals Club
THT sponsor
 
Join Date: Oct 2009
Posts: 10,087
Default

Airmar makes a very simple and inexpensive junction / splice box. Part no. 33035
We have used this for dozens of transducer splicing situations.

I always keep one onboard in case of any other emergency wiring repairs.

__________________

MARINE ELECTRONICS- TRANSDUCERS SALES
PM me or Email: travis.g@sbcglobal.net 1-800-925-0341
Feel free to contact me for any help & assistance. ...Gil Travis

VISIT MY FORUM for SALES & SPECIALS plus FYI TOPICS:
http://www.thehulltruth.com/semperfifishing-135/

Last edited by semperfifishing; 04-03-2011 at 12:31 PM.
semperfifishing is online now   Reply With Quote
Old 04-03-2011, 11:25 AM
  #7    
Senior MemberCaptains Club Member
 
Join Date: Dec 2005
Posts: 594
Default

Agree with semper..used the Jb a few times easy and good results
t-bone31 is offline   Reply With Quote
Old 04-03-2011, 05:49 PM
  #8    
Admirals Club
 
Join Date: Feb 2010
Location: Cudjoe Key, Fl
Posts: 473
Default

Thanks guys ! I am going to try the splice and order the Airmar. Even if the splice works, I will replace it with the connector when it comes in,
__________________
That's my 2 cents. And you can keep the change.


2010 Hydrasports Vector 22 CC. BREATHLESS AGAIN
1987 Boston Whaler 13. GASP
Gillotine is offline   Reply With Quote
 
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 



©2009 TheHullTruth.com

Powered by vBulletin® Version 3.7.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.2.0