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25% Off All Online Orders of Select Parts and Accessories
Receive 25% Off Your Online Purchase. Use promotional code 25PEP at checkout to receive discount. Not valid in combination with any other discounts or promotions. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Excludes the following categories: Tires, Wheels, Batteries, Powerstop Brake Kits, Oil, Antifreeze, Refrigerant, Truck Boxes, Vent Visors, Bug Shields and BRANDS: Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Thule, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, JVC, MSD and BBK Performance. Valid online until 2:59 am EST on 12/12/16. Online orders scheduled for in-store pick up must be completed by closing on 12/11/16 for discount to apply.

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  • Part #: 20314|
  • SKU: 662907

Available today

Pay in Store Available

    • Excellent For Automotive and Marine Applications
    • Reduces Risk for Alternator Circuit Damage Due To Heavy Voltage Surge
Retail
$16.99
PayPal available for online purchases. Major credit cards accepted online and in store. Pay online, in-store or take advantage of our Pep Boys credit card. Learn more and see additional details in cart.

WirthCo Engineering Battery Doctor Water Resistant Master Switch Kit

This Water Resistant Master Switch Kit reduces the risk for alternator circuit damage due to heavy voltage surge and is perfect for Marine and Automotive applications.
  • Excellent For Automotive and Marine Applications
  • Reduces Risk for Alternator Circuit Damage Due To Heavy Voltage Surge
  • Rated 100 amps Continuous, 1000 amps Surge At 12 Volts And 50 amps Continuous, 500 amps Surge At 24 Volts


662907

Rated 5 out of 5 by 1 reviewer.
Rated 5 out of 5 by Works great, very reliable. Third one I have bought in twenty years, three different vehicles, and they are all still working to save my batteries on very old vehicles. December 4, 2014
  • 2016-12-07 T10:13:19.525-06:00
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