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MS3Pro Accessories

Additional harnesses, sensors, connectors and other components for use with MS3Pro.

Showing all 16 results

  • Replacement MS3Pro 3000 mA Fuse

    $3.00

    The MS3Pro features user-replaceable fuses that protect against voltage spikes and other abuse. To replace these fuses, use a needle nose pliers to pull the fuse out of its holder, and you can push the replacement in with your fingers.Fuses sold indiv...

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  • Replacement MS3Pro 375 mA Fuse

    $2.00

    The MS3Pro features user-replaceable fuses that protect against voltage spikes and other abuse. To replace these fuses, use a needle nose pliers to pull the fuse out of its holder, and you can push the replacement in with your fingers.Fuses sold indiv...

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  • Replacement MS3Pro 500 mA Fuse

    $2.25

    The MS3Pro features user-replaceable fuses that protect against voltage spikes and other abuse. To replace these fuses, use a needle nose pliers to pull the fuse out of its holder, and you can push the replacement in with your fingers.Fuses sold indiv...

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  • MS3Pro EVO Universal Harness

    $249.00

    MS3Pro EVO Complete 8' Flying Lead Harness Only (White & Gray connectors with 8' pigtails) arrives with color-coded, printed wires per the pinout below.All applications. 

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  • MS3Pro ULTIMATE Universal Harness

    $299.00

    MS3Pro ULTIMATE Complete 8' Flying Lead Harness Only (White-Black-Gray connectors with 8' pigtails) arrives with color-coded, printed wires per the pinout below.All applications. 

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  • MS3Pro ULTIMATE Center Harness

    $49.00

    MS3Pro ULTIMATE adds nearly 50% more I/O with the addition of a third AMPSEAL 23-pin, 8' flying lead.  Harness arrives with color-coded, printed wires per the pinout below (black center connector)***Center Harness ONLY in this listing  ...

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  • MS3Pro EVO Uncrimped AMPSEAL Connectors

    $60.00

    Making your own harness? This plug and pin kit features the MS3Pro AMPSEAL white & gray connectors plus 75 pins- more than enough for making your own MS3Pro EVO or 1st Gen harness.MS3Pro ULTIMATE 3-connector AMPSEAL Kit available here

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  • MS3Pro ULTIMATE Uncrimped AMPSEAL Connectors

    $82.00

    Planning to make your own ULTIMATE harness? This plug and pin kit features the MS3Pro ULTIMATE AMPSEAL white, black & gray connectors, plus 100 pins- more than enough for making your own!(EVO/ 1st Gen 2-connector AMPSEAL Kit sold separately)

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  • MS3Pro 1st Gen Wiring Harness Upgrade (for ULTIMATE and EVO)

    $22.00

    If you have a previously installed MS3Pro harness (1st Gen flying lead or LS Drop On Harness) and want to upgrade to MS3Pro EVO or ULTIMATE ECU, the upgrade path is simple.  However, complete functionality will require a few basic changes to your 1st Ge...

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  • USB to Serial Adapter -TunerStudio

    $22.49

    This USB to Serial Adapter has been tested and works properly with all versions of TunerStudio.  We highly recommend this adapter is used if your tuning PC/laptop doesn't have a DB9 Serial connector.  Or you can use another adapter with a genuine FTDI c...

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  • 4 Pin M12 Serial Cable

    $31.50

    Connect MS3Pro ULTIMATE or EVO directly to your laptop with this 4 pin M12 serial cable.

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  • Sealed resistor – 10K

    $4.50

    We've wrapped a 10K, 1/4 watt resistor in a sealed and strain-relieved package for underhood use. Red heat shrink tubing with yellow leads. Typically used as a shunt resistor with VR sensors.

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  • Sealed resistor – 1K

    $4.50

    We've wrapped a 1K, 1/4 watt resistor in a sealed and strain-relieved package for underhood use. Blue heat shrink tubing with blue leads. Suggested uses include a pull-up resistor for Hall effect and optical sensors, and for spark outputs C and D on a Mic...

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  • Electronic Boost Control Solenoid Kit

    $58.00

    This electronic boost control solenoid can be used with the MS3-Pro/MSPNP as well as any DIY Style MegaSquirt EMS (with the appropriate mods), or with other electronic boost controllers to control boost by adjusting the pressure to a turbo wastegate. Th...

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  • GM Open Element IAT Sensor with Connector

    $21.00

    These are the proper GM-style sensors for use with the MegaSquirt line of ECUs and come with the weatherproof connector and crimp pins.  One extra crimp pin is included as a spare.  The threads are 3/8" NPT pipe thread - note that isn't an actual 3/8" o...

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  • GM Closed Element CLT/IAT Sensor with Connector

    $17.00

    These are the proper GM-style sensors for use with the MegaSquirt line of ECUs and come with the weatherproof connector and crimp pins.  Suitable for use as a coolant temperature or oil temperature sensor, and is occasionally used as an air temperature s...

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