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    Automotive Wire & Wiring Guide from TESSCO

    Automotive Wiring Guide from TESSCOInstallation of wireless devices, audio, emergency equipment, or other accessories in a vehicle can sometimes be a daunting task. With TESSCO's exclusive Wireless Solutions® installation accessories, you'll get the highest quality at competitive prices for a good job the first time.

    View Full Automotive Wire Selection
    Use the "Filter Search Results" button to quickly find your exact wire.

    New! Wireless Solutions Mini-ATM Low Profile Fuses.

    More and more auto manufacturers are using the new Mini-ATM, Low Profile fuses in their vehicles. These fuse use less space and are ideal for the limited space requirements in new vehicles. Stock up on these handy 10 packs in 5, 7.5, 10, 15, 20, 25, and 30 Amps.

    Wireless Solutions is high quality at low prices.

    Get Noticed With Vehicle Strobe Lights

    Installed Car Strobe Lights Wireless Solutions Remote Strobe Power Kits can be installed in any vehicle by drilling a 1" hole to place the grommet mounted strobe lights. Both the 4 bulb and 6 bulb kits have a power pack capable of handling 6 bulbs. The kits come with everything needed except a switch. They are brighter and more effective than "wig-wag" halogen flashing lights. The bulbs are easy to install and are built to take road punishment.

    Run Speaker Wire Anywhere

    Flat Speaker Wire If you need to run speaker wire in small areas, such as along molding, baseboards, or under carpet, JSC Flat speaker wire is the solution you have been looking for. It’s braided conductors and flexibility make it ideal for those difficult installations. View TESSCO's full line of speaker wire.

    Typical Low Voltage Wire Sizes

    Air Conditioning- 10 GAUGE Heater Switch- 10 GAUGE
    Alternator- 10 GAUGE Horn Button- 13 GAUGE
    Ammeter- 10 GAUGE Horn To Relay- 10 GAUGE
    Cigarette Lighter- 14 GAUGE Ignition Switch – 12 GAUGE
    Clock- 18 GAUGE Low-Amps Circuits- 18 GAUGE
    Coil Wire- 16 GAUGE Parking Lights- 16 GAUGE
    Dome Lights- 16 GAUGE Radio To Fuse Blocks- 14 GAUGE
    Driving Lights- 14 GAUGE Single Bulbs- 18 GAUGE
    Gauges- 14 GAUGE Starter To Relay- 16 GAUGE
    Generator (Charging)- 10 GAUGE Stoplights- 16 GAUGE
    Generator To Starter- 16 GAUGE Tail Lights- 16 GAUGE
    Headlight Circuit- 14 GAUGE Turn Signals- 16 GAUGE
    Headlight Switch To Fuse Block- 12 GAUGE CD To Fuse Block- 14 GAUGE
    Heater Leads- 16 GAUGE Windshield Wiper & Washer- 14 GAUGE

    For safety and best results— When circuit is longer than 10 feet, always use the next larger gauge size, which is the next lower even number.


    Wire Gauge Selection Table 12 Volt Circuit

    AMPS 3' 5' 7' 10' 15' 20' 25'
    0 to 5 18 18 18 18 18 18 18
    6 18 18 18 18 18 18 18
    7 18 18 18 18 18 18 18
    8 18 18 18 18 18 16 16
    10 18 18 18 18 16 16 16
    11 18 18 18 18 16 16 14
    12 18 18 18 18 16 16 14
    15 18 18 18 18 14 14 12
    18 18 18 16 16 14 14 12
    20 18 18 16 16 14 12 10
    22 18 18 16 16 12 12 10
    24 18 18 16 16 12 12 10
    30 18 16 16 14 10 10 10
    40 18 16 14 12 10 10 8
    50 16 14 12 12 10 10 8
    100 12 12 10 10 6 6 4
    150 10 10 8 8 4 4

    2
    200 10 8 8 6 4 4 2

    Fuses Available from TESSCO

    Fuses

    AGC
    ATC
    ATM
    MAXI ATC
    Amps Part # Amps Part # PKG Amps Part # PKG Amps Part #
    .1 71407 1 65663 10 2 53419 100 20 485827
    .5 34375 2 63948 100 3 420803 10 30 460814
    1 35603 3 86545 10 4 492850 10 40 459880
    2 22389 5 422805 10 5 460824 10 50 495857
    3 60782 7.5 493852 10 7.5 499867 10 60 441835
    4 99175 10 458839 10 10 494818 10    
    5 47568 15 488801 10 15 498851 10    
    6 42100 20 495867 10 20 447825 10    
    7.5 34354 25 410882 10 25 439816 10    
    8 72747 30 472809 10 30 445876 10    
    10 10424 40 443804 10          
    15 87210                
    20 73996                
    25 54668                
    30 63306                

    Your Total SourceFor more information contact TESSCO
    at 800-472-7373 or by email.

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