golf cart diagnostics
Golf cart with a carved pumpkin on the seat among glowing jack-o-lanterns on a misty Halloween night
Halloween Sale

Halloween Sale Is On. Ends October 31.

Sale prices on select conversion kits, controllers, motors, batteries, chargers, solenoids and contactors. Every part shows the carts it fits, and we can confirm the fit before you order.

Shop the sale Shop all parts

Sale prices end at 11:59 PM Pacific on October 31.

Fitment-first partsModel and voltage detailsTrusted brandsEstablished parts suppliersClear shippingRates shown before checkoutOrder trackingUpdates after dispatchReal supportHelp before and after purchase

Popular Upgrades

Shop the main systems owners replace, repair and upgrade.

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AC Conversion KitsDC to AC motor and controller kitsShop now Lithium BatteriesLiFePO4 bundles, 36V to 76VShop now AC Motors4kW, 5kW and 7.5kW AC motorsShop now ControllersNavitas, Alltrax and CurtisShop now Harnesses & ProgrammersHarnesses, sensor cables, OTF programmersShop now Chargers & CablesLead-acid and lithium chargersShop now

Navitas conversion kits

Replace a failing Curtis or Moric controller with a complete AC drive system.

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23 free golf cart tools.

Decode a serial number, size a controller, price a battery pack or trace a fault.Every tool shows the numbers behind its answer, so you can check the working and buy the right part the first time. No signup, no email, no paywall.
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Serial Number Decoder

Club Car, E-Z-GO and Yamaha. Get the exact year and model before you buy a part.

Replacement Controller Finder

Pick your cart and see the controllers that fit: the same part again, an upgrade, or a full conversion.

AC Conversion Kit Finder

Pick your cart and see the AC motor and controller kits that bolt on, with the reason each one fits.

Lithium batteries

Drop-in LiFePO4 bundles with BMS, charger and harness included.

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What are you fixing?

Most owners arrive with a symptom, not a part number. Start where the problem is.

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Go faster, pull harder

Navitas AC conversion kits. Up to 25 mph, regen braking, and no more Curtis fault codes.

Conversion kits

Will not hold a charge

Drop-in LiFePO4 from Lithium Rhino and MODZ. 48V and 72V, no watering, ten-year life.

Lithium batteries

Slow and gutless

4kW, 5kW and 7.5kW AC motors in speed and torque windings, 10T and 19T splines.

Motors

Throwing fault codes

TSX 3.0 controllers, cart-specific harnesses and the On-The-Fly programmer.

Controllers and harnesses
Beginner buying guides

Not sure what’s broken? Or what to buy?

Our beginner buying guides walk you through it step by step. They help you work out whether something is actually broken, then show you exactly which part to buy for your cart.

Browse buying guides Free to read. No account required.

Replacement controllers

Navitas TAC2 and TAC3 drop-in replacements for a failed Curtis, Sevcon or Moric controller. Cart-specific, 48V to 72V.

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Golf Cart Repair Guides and Diagnostic Tools

Follow model-specific troubleshooting, wiring references and repair procedures built to help you confirm the fault before replacing parts.

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Repair Guides

Every repair and fault-diagnosis guide, searchable by system: power, drive, controllers, switching and chassis.

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Parts & Compatibility

Batteries, controllers, chargers, motors and conversion kits, with the fitment checks that actually matter.

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Golf Cart Brands

Model histories, common problems and buying notes for Club Car, E-Z-GO, Yamaha, ICON and more.

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Upgrades: Worth It?

Honest verdicts on lithium, speed, lift, sound and lighting upgrades, with the real cost and payback.

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Comparisons

Head-to-head breakdowns of brands, batteries, controllers, speed and range to settle the decision.

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All Owner Tools

Serial decoders, range and speed calculators, and fitment tools built around real cart specs.

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Repair guides for the problems that stop carts cold

These guides walk through the faults that strand carts most often, from weak packs and bad solenoids to tow/run switch issues, fuel starvation and parasitic battery drain.

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Star EV Rear Differential Fill Plug: Where It Is on the Classic and How to RefillCan't find the Star EV rear differential fill plug? On the Classic it is the vented bolt on…Read guide EZGO TXT Carburetor Adjustment: Idle, Throttle Cable and Governor BaselineIdentify the TXT engine, clean the fuel system, set throttle cable free play and idle in order, and…Read guide Why an EZGO TXT Parking Brake Pops Off When You Press the GasThe TXT accelerator normally releases the parking brake. Learn when the pop-off is correct and when the latch,…Read guide How to Test an EZGO Forward/Reverse Switch: Continuity and Voltage DropLearn how to test an E-Z-GO forward/reverse switch, from mechanical high-current contacts to dash rocker continuity and live…Read guide Golf Cart HPD/Sequencing Fault: Key, Direction and Throttle Input TestsAn HPD sequencing fault usually means the controller saw key, interlock, direction, or throttle in the wrong order.…Read guide Club Car 48V Battery Wiring Diagram: DS and Precedent LayoutsTrace Club Car DS and Precedent 48V battery wiring, compare six 8V and four 12V layouts, identify the…Read guide Golf Cart Won’t Move But Motor Spins: Drivetrain and Axle DiagnosisHome / Repair Guides / Motor & Drive Logic / Motor Spins, Cart Will Not Move Golf Cart…Read guide Yamaha Golf Cart Carburetor Adjustment: Mixture and IdleHome / Repair Guides / Motor & Drive Logic / Yamaha Carburetor Adjustment Yamaha Golf Cart Carburetor Adjustment:…Read guide

Why Golf Cart Owners Trust Our Diagnostics

Data Driven

No guesswork. Every golf cart diagnostics guide is backed by multimeter specs, pinout voltage charts, and real hardware testing.

Evidence Checked

Procedures checked against service manuals, parts diagrams, multimeter readings, and repeat owner-reported failures.

Live Database

Updated as new fault-code patterns, lithium BMS issues, charger behavior, and controller notes are documented.