Nobody rewiring a trailer wants to get better at hand-soldering. The job is a splice that stays sealed in a wet, vibrating, hard-to-reach spot. Every common method fails that brief in its own way.
The solder is already inside the connector. When you apply heat, the ring melts into the wire strands while the sleeve shrinks and seals around the splice. That means the connector handles the delicate part for you: no separate solder feed, no extra shrink step, no trying to balance an iron in a cramped spot.
Offer
See the Connector Method That Replaces the Iron
Built on The Dual-Wall Solder-Seal Process: fused in one heat cycle, sealed for the life of the wire.
- 4.6 stars from 5,000+ verified reviews
- 30-day money-back guarantee
- Free worldwide shipping, arrives in 3-5 days
$199.99 $99.99 Best Value · 500 Pcs · 50% off
Kits from $24.99
One kit replaces a soldering iron, flux, and a separate heat-shrink kit. No soldering iron needed for any splice.
Every connection that fails is a job you do twice: once now, again at the next car wash, trailer launch, or freeze. Spend the $25 once.
Choose Your Kit SizeOffer
Pick the Kit That Matches the Job
Every kit includes all four AWG sizes. The only question is how many you need.
Built on The Dual-Wall Solder-Seal Process: fused in one heat cycle, sealed for the life of the wire.
Starter Kit
$24.99$0.50 per connector
Most Popular
$39.99$0.40 per connector
Workshop Supply
$59.99$0.24 per connector
Best Value
$99.99$0.20 per connector
$199.99 $99.99 Best Value · 500 Pcs · 50% off
Kits from $24.99
One kit replaces a soldering iron, flux, and a separate heat-shrink kit. No soldering iron needed for any splice.
Every connection that fails is a job you do twice: once now, again at the next car wash, trailer launch, or freeze. Spend the $25 once.
FAQ
The Questions People Ask Before Ordering
Is the solder bond as strong as traditional soldering?
Yes. The low-temp solder ring wicks into the individual wire strands through capillary action, creating a metallurgical bond. This is the same physics as traditional soldering. The difference is delivery: SolderStick puts the solder inside the connector instead of on the tip of an iron. CE certification confirm the connection meets industrial safety standards.
I already own a heat gun. Do I need a special one?
Any standard heat gun works. The solder melts at 138C (280F), which is well within the range of every consumer heat gun on the market. A butane torch also works if you keep it moving to avoid scorching the tubing.
I still need a heat gun, so how is this easier than a soldering iron?
A heat gun is one hand, pointed at the work from 2-3 inches away. A soldering iron requires one hand to hold the iron, one hand to feed solder, and somehow a third hand to hold the wires together. Heat guns work in any position: overhead, under a dashboard, in an engine bay. No flux. No dripping solder. No tip cleaning.
What about the cheap solder-seal connectors on Amazon for half the price?
Most generic solder-seal connectors use single-wall tubing and inconsistent solder rings. Forum threads on Reddit and GarageJournal are full of reports about solder that barely melts and tubing that cracks in cold weather. SolderStick uses dual-walled polyolefin with an adhesive inner liner and is the only DTC brand with both CE certification. The $0.50 per connector price difference buys you connections that actually hold.
Which size do I need?
The kit includes all four AWG sizes, color-coded: White (26-24 AWG) for signal and speaker wire, Red (22-16 AWG) for standard automotive, Blue (16-14 AWG) for medium loads, Yellow (12-10 AWG) for high-current applications. If you are not sure, the 100-piece kit gives you enough of each size for most projects.
What if SolderStick connectors don't work for my repair?
Every SolderStick kit ships with a 30-day money-back guarantee. If the connectors don't perform as described, return them for a full refund. no questions asked. Free worldwide shipping is included on every order.
30 days
30-Day Money-Back Guarantee
Use them on your next project. If any connector fails to seal, solder, or hold up to your standards, contact SolderStick support for a full refund. No return shipping. No restocking fee. 24/7 support.
24/7 customer support
Offer
Put the soldering iron away for this kind of repair.
Solder-quality connections. Waterproof seal. One tool. Ten seconds.
Built on The Dual-Wall Solder-Seal Process: fused in one heat cycle, sealed for the life of the wire.
- 4.6 stars from 5,000+ verified reviews
- CE certified connections
- 30-day money-back guarantee
- Free worldwide shipping
$199.99 $99.99 Best Value · 500 Pcs · 50% off
Kits from $24.99
One kit replaces a soldering iron, flux, and a separate heat-shrink kit. No soldering iron needed for any splice.
Every connection that fails is a job you do twice: once now, again at the next car wash, trailer launch, or freeze. Spend the $25 once.
Get Your SolderStick Kit
5,000+ People Stopped Soldering the Hard Way
Bought these for boat trailer connections. Exposed to constant dunking in salt water. They worked great!
Steven F.Boat Trailer WiringI've used them on the job for several years now, to make splices that have to last, and there's nothing else I've found that does it better, or easier.
MichaelSplices That Have to LastA far better connection than crimp style connectors and they come with the heat shrink tube already on them.
Matt B.Replaced Crimp Connectors