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Old 03-16-2002, 10:46 PM   #1
Poe
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Default is it really recessary to solder the wiring harness to the head unit's harness?

do i really have to solder the 2 harnesses? are there any disadvantages to just tying them together and putting those little twisty caps on them? any advantages to soldering?
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Old 03-16-2002, 10:50 PM   #2
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soldering is the best method, but any kind of connection will work. butt connectors, quick connectors, or the twisty cap things. all you have to do is get it so that the two wires are connected and stay connected, and that there are not any exposed wires.
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Old 03-16-2002, 11:15 PM   #3
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so soldering isn't gonna give me higher sound quality or something is it? if not.. i'm just gonna use the twisty cap things =)
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Old 03-17-2002, 07:39 AM   #4
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For the best connection quality and reliability it's preferable to solder and heat-shrink the connections, but if you're not comfortable with soldering the next best thing is to use butt-splices (just make sure they are crimped properly) and cover them with electrical tape.
Wire nuts (the twisty cap things) are not meant to be used in an environment such as your car where there will be vibration and changing temperatures, they may loosen up and fail eventually. I would not recommend using them.
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Old 03-17-2002, 04:35 PM   #5
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i guess i can try to solder. all i do if put the 2 ends together and solder... right? do i have to put some solder in between or something? i've never tried it.

but anyways... what are butt splices? what do they look like? can i get them at home depot?
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Old 03-17-2002, 05:30 PM   #6
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they are a plastice cylinder that has a metal section within it. There are connectors for different gague wire. You just strip a slamm sextion of each wire and insert into the ends. Then you crimp the cylinder shut to hold them together. Some people will then wrap them with electrical tape. Any store that carries electrical stuff will have them.
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Old 03-17-2002, 05:39 PM   #7
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Quote:
strip a slamm sextion
Or, as most people do, strip a small section.
If you've never soldered before, definitely go with the butt splices. My local auto parts store carries them, too. One handy thing to get if you don't have it is a wire stripping tool. It looks like a funky set of clippers with all kinds of springs & stuff on it, and runs about $20 at Radio Shack. With it, you can automatically strip wire ends properly to whatever length you want (and you can also use the inside "V" angle for crimping.
Practice first on some scrap wire of the same guage as your wiring harness -- try stripping, crimping into butt splices, etc. Then try pulling some butt splices apart to get a feel for how securely the wire is held in there. The key thing, as mulder said, is that the connection stay connected over years of vibrations and temp and humidity fluctuations -- the wire nuts aren't going to do that. You don't want to have to pull the whole thing out and redo it to fix an intermittent break 6 months from now!
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Old 03-17-2002, 05:46 PM   #8
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<---- has trouble speling
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Old 03-17-2002, 07:15 PM   #9
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If you have never done any soldering you don't want to learn on your car wiring. I've been doing soldering and electrical stuff for a long time so it's no big deal.
You can get butt splices at Radio Shack or the electrical section at Home Depot or any similar hardware store. Definitely get a decent wire stripper and crimpers and as suggested do some practice crimps to be sure they are tight and make a positive connection. Either tape or heat-shrink the butt-splice connections to protect and seal them. There are butt-splices available that actually incorporate heat-shrink so after you crimp them you heat them with a heat gun to seal them. You may be able to find these at the same stores if you look around.
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Old 03-18-2002, 12:35 AM   #10
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great.. i'll try the butt splices then... thanks a lot for everybody's help!
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Old 03-18-2002, 12:38 AM   #11
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wait... what gauge wiring is the harness? 12? 14?
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Old 03-18-2002, 04:30 AM   #12
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I'm pretty sure the stock speaker wires are 18 guage out at the speakers. You can get a plastic guage tester/guide really cheap at Radio Shack or some other place. Comes in handy sometimes.
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