NSPA Krimpa-Seal Waterproof Crimp Step Down Butt Connectors, Yellow 16-14 to 12-10 AWG.

Yellow crimp and seal step-down wire connectors.  These are waterproof* heat shrink NSPA Krimps-Seal sealed electrical butt connectors. Tapered connectors and are RoHS compliant.  Made in the USA.  There simply is no better product made. 

• Color: Blue with Red/Blue wire size strip marker
• Wire Size: 16-14 AWG to 12-10 AWG
• Product Name: SES Krimpa-Seal, Heat Shrink Crimp Step Down Connectors
• Type: Step Down Butt Connector, Crimp and Seal with Adhesive-Lined Heat Shrink Tubing
• Seam Type: Seamless
• Part #: KS56-14 (Yellow/Blue; 12-10 AWG to 16-14 AWG)

INSTRUCTIONS:

1. Strip both wires, wire length 5/16" (8mm)
2. Insert wire into barrel 
3. Crimp wire to barrel 
4. Heat tubing 

For best results: Use heat device of at least 1000°F/538°C. Don’t overheat tubing. Don’t isolate flame. Distribute heat evenly over tubing. 

NOTE : Crimping tool and Heat Source to reduce tubing and seal connector needed.  Butane Torch and Ratcheting Crimp tool recommended.  Questions, please ask.

* There is no official UL Standard for 'waterproof' electrical connectors. Connectors would most likely fall in the IP67 range (IP - Ingress Protection, 6 - Totally protected against dust, 7 - Protected against the effects of temporary immersion between 15cm and 1m. Duration of test 30 minutes)