Classic cars and EV conversions share a common problem: the steering is too heavy. A universal electric power steering (EPS) kit solves this by adding electric assist to your existing steering column — no hydraulic pump, no belts, no fluid leaks. Here is how to install one correctly and why CMVTE's EPS kit is the best choice for your build.
Why Add EPS to Your Build?
Hydraulic power steering depends on the engine. In an EV conversion, there is no engine-driven pump. A manual steering rack works, but parking lot manoeuvres become a workout. EPS solves this with a self-contained electric motor that mounts to the steering column and draws power from the 12V system. Benefits include:
- Adjustable assist levels — light for parking, firm for highway driving
- No engine dependency — works perfectly in EVs with no ICE
- Simple installation — no hydraulic lines, pumps, or reservoirs
- Weight reduction — removes hydraulic pump, lines, and fluid
- Improved fuel/energy efficiency — only draws power when steering
CMVTE EPS Kit Overview
CMVTE offers universal EPS kits in 12V and 24V configurations, covering vehicles from classic Minis to full-size trucks. Each kit includes: the EPS motor unit with integrated controller, steering shaft couplers for multiple column diameters (3/4" to 1" DD shafts), torque sensor, wiring harness with fused power leads, mounting brackets, adjustment controller with DIP switches, and installation manual. The 24V version is specifically designed for EV conversions where a 24V accessory bus is available, reducing current draw by half compared to a 12V system at the same power output.
Installation Overview
Mechanical: Disconnect the battery. Remove the steering wheel and any existing hydraulic steering components. Mount the EPS motor to the column using the provided brackets. The motor must align with the steering shaft — CMVTE's adjustable couplers accommodate a range of column angles without custom fabrication. Apply thread locker to all fasteners.
Electrical: Connect motor leads to the controller. Run power directly to the battery with the included 40A inline fuse. Ground all components to the same chassis point. Install the torque sensor between the steering wheel and the EPS motor. For EV conversions, verify voltage matches your accessory bus — use a DC-DC converter if your traction pack runs at a higher voltage.
Calibration: Reconnect the battery. Turn the ignition to ON and verify the controller status light. Turn the steering wheel lock-to-lock to check for binding. Adjust assist levels using the DIP switches on the controller — CMVTE's system supports fine-tuning from minimal assist to full power with no programming required.
Common Problems & How to Avoid Them
Most EPS installation issues come down to three things: voltage drop, grounding, and alignment. A cheap US Parts Retailer Kit often ships undersized wiring that cannot carry the current needed for sustained assist, causing intermittent cutout during parking. CMVTE's harness uses automotive-grade 10 AWG wire with sealed connectors — no voltage drop, no corrosion.
Grounding issues cause whining noises from the motor. CMVTE's kit includes a dedicated ground strap with a ring terminal. Mount it to clean, bare metal on the chassis or firewall. If noise persists, the included ferrite choke on the power wire eliminates electromagnetic interference.
Alignment problems — the motor shaft not perfectly matching the column axis — cause vibration and premature bearing wear. CMVTE's universal couplers use a u-joint design that compensates for up to 10 degrees of misalignment, something fixed-bracket kits cannot handle.
CMVTE vs Generic Kits
| Feature | CMVTE EPS Kit | Generic / US Retailer Kit |
| Voltage options | 12V and 24V | 12V only |
| Wiring gauge | 10 AWG automotive | 16-18 AWG typical |
| Misalignment tolerance | Up to 10° (u-joint coupler) | Fixed bracket, zero tolerance |
| EMI suppression | Ferrite choke included | Not included |
| Assist adjustment | DIP switch, 16 levels | Fixed or limited |
| Support | Remote video + manual | Email only |
Which Vehicles Benefit Most
CMVTE's universal EPS kit fits a wide range of applications: classic cars that never had power steering (1960s Mini, VW Beetle, early Mustangs, vintage Land Rovers), EV conversions where the original hydraulic pump has no engine to drive it, and modern classics where the original hydraulic system is leaking or failing. The 12V version works on any vehicle with a standard 12V electrical system. The 24V version is ideal for EV conversions with a 24V accessory bus, drawing half the current of an equivalent 12V system — important for range optimisation.
CMVTE Advantage
CMVTE has been manufacturing EPS systems since 1995, shipping to 130+ countries. Every kit is tested in our Foshan factory before shipment. Dr. Kevin Wang's engineering team provides remote installation support. Whether you are converting a 1965 Mustang, a VW Beetle, or a purpose-built EV, the CMVTE EPS kit delivers reliable, adjustable power steering with a weekend installation.
Not sure which EPS kit fits your vehicle? Ask our engineers for a free recommendation
