Alternator Charging Wiring Kit (100A)

The Off-Grid Power 100A 12V Alternator Charging Wiring Kit provides the DC cable, copper lugs, and adhesive-lined heat shrink needed to integrate the optional MobileMustHave 100A at 12V alternator charging module with a compatible Off-Grid Power Bundle.

This wiring kit is designed for larger motorhomes, diesel pushers, and other vehicles equipped with higher-output alternators, typically 200A or greater. The 100A charging option uses two Orion 1400 Series DC-to-DC chargers operating as part of the same charging system, effectively doubling the available charging output compared with the 50A alternator charging option.

The included cable lengths and termination hardware are selected to match the detailed MMH wiring diagrams for this dual-charger configuration, helping simplify sourcing and providing the materials needed to connect the Orion chargers and associated circuit protection into the primary Off-Grid Power System.

What's Included

• 120 ft. total of 4 AWG UL MTW DC Cable
• 12 × 5/16" 4 AWG Copper Lugs
• 6 × 3/8" 4 AWG Copper Lugs
• 6 × 1/4" 4 AWG Copper Lugs
• 3 ft. of 1/2" Red Adhesive-Lined Heat Shrink
• 3 ft. of 1/2" Black Adhesive-Lined Heat Shrink

Wire quantities are measured in linear feet. The material list specifies two 60-foot quantities of 4 AWG UL MTW cable, for 120 feet total. Heat-shrink quantities are supplied as 12-inch sections.

High-Quality, Multi-Rated Copper Cable

The cable included in this kit is full-AWG, pure OFC copper cable made in the USA and selected for demanding mobile, marine, RV, automotive, and off-grid power applications. The Class K flexible stranded construction makes the cable easier to route through large motorhome and vehicle installations while providing the copper content needed for high-current DC connections.

The cable carries multiple ratings and approvals, including UL MTW, UL1426 BC5-W2 marine cable, UL THW building wire, UL AWM, and SAE automotive battery cable ratings. It features a durable PVC jacket resistant to oil, water, chemicals, abrasion, and sunlight and carries a UL VW-1 flame-resistance rating. Depending on the applicable rating, the cable is rated for applications up to 600V or 1000V.

Tin-Plated Pure Copper Lugs

The included heavy-duty lugs are manufactured from pure copper and tin plated for corrosion resistance. Their seamless construction, flared barrel, and chamfered opening are well suited for the flexible stranded cable used in high-current mobile power installations.

The lugs are UL Listed/CSA Certified and can be crimped or soldered. Multiple stud-hole sizes are included so the wiring can be terminated at the appropriate connection points throughout the dual-charger alternator circuit as shown in the MMH wiring diagrams.

Adhesive-Lined Dual-Wall Heat Shrink

The included red and black heat shrink uses a 3:1 shrink ratio dual-wall construction with a flame-retardant cross-linked polyolefin exterior and hot-melt adhesive interior. When properly heated, the tubing shrinks tightly around the connection while the adhesive flows around the underlying surface. Once cooled, it forms a durable, flexible, and water-resistant seal around the termination.

Designed for the 100A 12V Alternator Charging Module

This wiring kit is specifically designed to accompany the optional 100A at 12V Alternator Charging Module available for MobileMustHave Off-Grid Power Bundles. It supports the dual-Orion charger configuration used to provide increased alternator charging capability for larger vehicles and motorhomes with sufficient alternator capacity.

While the wiring kit can be purchased separately, it is intended primarily to be selected as part of a complete system through the MobileMustHave Off-Grid Power Configurator, which automatically matches the appropriate charging modules, wiring kits, and supporting components to your selected system.

Configure your system at the MobileMustHave Off-Grid Power Configurator.