Just finished doing one. Here's what I found and did.
New style Lowrance
1.) The data leads coming from the transducer are "twisted", or wrapped around each other. This is important as the twist prevents crosstalk between the leads. Put as many twist back as you can when splicing.
2.) Power leads(black/red) are separated from the data leads keep'em that way(no need to twist power leads)
3.) Both set of leads(power and data) are shielded with foil. When covering your splice it's easy to replace the foil shield if you cut the aluminum foil into strips and wrap each set as you would with standard electrical tape.
4.) Prior to soldering the leads slip a piece of heat shrink tubing over each wire. Solder the leads, position the heat shrink and shrink it into place
5.) The lead sets are insulated with a plastic film that is part of the foil. Each set of leads has a bare grounding wire. I'm not sure if those two grounding leads terminate at the same location or not but I wrapped one set of leads, after the foil, with standard clear plastic office tape to replace the insulation properties that were there before the splice.
6.) Double wrap the leads with a good quality electrical tape taking the tape 1-2" over the original outter insulation.
7.) 2-3 coats of liquid tape allowing the coats to dry between applications
New style Lowrance
1.) The data leads coming from the transducer are "twisted", or wrapped around each other. This is important as the twist prevents crosstalk between the leads. Put as many twist back as you can when splicing.
2.) Power leads(black/red) are separated from the data leads keep'em that way(no need to twist power leads)
3.) Both set of leads(power and data) are shielded with foil. When covering your splice it's easy to replace the foil shield if you cut the aluminum foil into strips and wrap each set as you would with standard electrical tape.
4.) Prior to soldering the leads slip a piece of heat shrink tubing over each wire. Solder the leads, position the heat shrink and shrink it into place
5.) The lead sets are insulated with a plastic film that is part of the foil. Each set of leads has a bare grounding wire. I'm not sure if those two grounding leads terminate at the same location or not but I wrapped one set of leads, after the foil, with standard clear plastic office tape to replace the insulation properties that were there before the splice.
6.) Double wrap the leads with a good quality electrical tape taking the tape 1-2" over the original outter insulation.
7.) 2-3 coats of liquid tape allowing the coats to dry between applications
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