This four module extension allows you to "extend" a two module harness to six modules or a four module harness to eight modules.  And you can add these extensions to get any even number of modules up to the max 62 supported by the controller.

Ferraz Shawmut A30QS400-4  This is a semiconductor fuse for use between battery pack and controller on smaller systems.  This fuse will do up to 1000 amps for  brief accelerations.

Shown with P243G fuse holder. *

* Fuse holder not included - available separately.

 10-ft sectuib if AN4 Red Nylon Braided Hose.  This 350psi high quality hose has an inner diameter of 0.22 inches - just perfect to fit over the Tesla Model S Battery module coolant fittings.

How does it differ from the less expensive black braided nylong hose?  Easy.  It's red.

 Stainless Steel Reinforced Braided Nylon Line - Size AN-6 

This high quality hose is designed to carry fuel, oil, water, other liquids and is perfect for EV cooling systems carrying 50% ethylene glycol and water.  Stainless steel reinforcement provides strength while the braided nylon sheath protects from abrasion and chafing while providing outstanding flexibility.  Inner tubing is a CPE sythetic resistant to almost any chemical or fluid.  Withstands temperatures from -40F to 350F and pressures to 1500 psi.

Inner diameter is 3/8 inch AN-6 - perfect for use with the Summit Racing AN-6 series fittings we use for such cooling systems for inverters, controllers, and liquid cooled motors.  This tubing also easily withstands temperatures for vehicle heating systems.

 This is a wiring harness that plugs into the BMS board connectors on the Tesla Battery Module.  This harness will connect four Tesla battery modules.

 This is a wiring harness that plugs into the BMS board connectors on the Tesla Battery Module.  This harness will connect two Tesla battery modules.

 10-ft sectuib if AN4 Black Nylon Braided Hose.  This 350psi high quality hose has an inner diameter of 0.22 inches - just perfect to fit over the Tesla Model S Battery module coolant fittings.

 4AN to 6AN Bulkhead Adapter.  We use these to mount in the wall of a cabinet.  It allows us to connect the 4AN hose on the inside of the cabinet that connects to Tesla battery module cooling fittings.
We put the 6AN side on the outside allowing us to connect larger coolant hoses externally with the pump and heater or heat exchanger.

 Wiring harness for our Tesla Model S Battery Module Controller.  Comes with connector for the module wiring harnesses.

 These heavy copper 1 inch straps feature heavy MILSPEC shrink wrap insulation and are perfect for connecting two Tesla Battery Modules stacked vertically.

BLUE LED Pushbutton Switch. Normally open. Depress switch to latch closed. Press again to release back to open. 3A/250v. LED 5-12v