SB connectors come in four different amperage ratings (50, 120, 175 and 350) and six colors (Yellow, Orange, Red, Gray, Blue and Green). Connector kits are also available containing one housing and two contacts.
Red, gray and blue housings – what’s the difference?
Housings are color-keyed. This means gray housings will only plug into gray housings, not red or blue housings. The color key feature makes it possible for you to differentiate voltages of your electrical circuits.
NOTE: Connectors will only connect to the same amp ratings as well (example: a gray 50 amp connector will only plug into another grey 50 amp connector)
Original Crimp Style SB Contacts

