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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 12-15-2005, 12:14 PM   #1
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Join Date: Mar 2004
Location: Chicago, IL
Posts: 694
My Ride: '06 330i
How to splice wires?

Hi all,

What's the best way to splice wires? I've always depended on wire taps, but for what I'm doing, space is tight.

Other than soldering (I don't know how to solder) Is crimping them together the best way? Can you show me what type of crimps/crimpper to get?

BTW, I'm working with really thin insulated copper wire, ~ 18 gauge (mirror wiring).

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Old 12-16-2005, 01:03 PM   #2
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Location: Burke, VA
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Best thing to do is solder. If you don't knoe how to solder, just pick up a soldering iron or gun and learn. Insulate with good quality tape (I use 3M Super 33 tape).

If you are completely against learning how to solder, you could just wrap the new wire over the existing wire and then insulate with tape, but this could cause problems over time if the connection gets loose or corroded.
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Old 12-17-2005, 04:52 PM   #3
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Location: Wallingford CT
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Here's how i do it.

-Put heat shrink tubing onto one wire
-twist wires together
-make sure your twisted wires are not too long (half inch)
-slide the heat shrink tubing over the spliced wires

electric tape would work too.

What are you trying to splice?

that said, soldering is the best...

-get a gun, let it heat up
-hold the tip to the twisted wires and get them hot
-with the tip on the wires, poke a piece of solder to the wires, not to the tip.
-if its hot enough, the solder should melt right into the twisted wires.
-theres no need to use a ton of solder.
-best thing is the get it done in one shot, trying to reheat a soldered connection could cause it to come apart and start over.

good luck

Last edited by marchandc; 12-17-2005 at 04:56 PM.
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