Thinkcar ACT20 circuit tester for independent workshops – 12/24 V, 6 m cable

Thinkcar ACT20 – circuit tester for fast fault finding in the vehicle wiring

• ✔ Tests 12-volt and 24-volt systems – measuring range up to 36 V
• ✔ Measure voltage, current and resistance, plus polarity, continuity and ground tests
• ✔ Activate components directly: apply power or ground through the probe to motors, relays and lights
• ✔ 1.77-inch colour display, built-in light and 6 m cable for the whole vehicle

The Thinkcar ACT20 is a compact automotive circuit tester for independent workshops, the professional diagnostic bay and mobile fault finding. It connects to the vehicle battery and shows at the probe tip whether a wire carries power, ground or nothing at all. This lets you find broken wires, poor ground connections and short circuits in workshop quality without first setting up a multimeter with two test leads.

Measure, test and activate with one tool

The ACT20 measures DC and AC voltage, current and resistance and shows the values on its 1.77-inch colour display. A red and a green indicator mark positive and ground, and open circuits are detected as well. Switches, relays and diodes can be tested, and with the power switch you apply power or ground directly through the probe to a component – for example to run a fan motor, a light or a relay without removing the control unit.

For wiring, fuses, relays and consumers

Typical jobs are checking fuses and connectors, tracing ground problems, testing actuators and consumers and troubleshooting lighting and trailer sockets. The 6 m cable reaches from the battery to the rear of the vehicle, and the built-in light helps in the dark footwell and at the fuse box.

Please note

When activating components directly, battery current flows through the probe. Only activate components that are suitable for it, and never control-unit inputs or sensor wires. If you have questions about correct use, feel free to call us.

Technical data

Scope of delivery

• Thinkcar ACT20 circuit tester with 6 m cable
• Battery clamps, red and black
• Additional ground lead with clamp

Pay by invoice possible (Klarna or PayPal). The ACT20 is a professional tool for commercial workshop use – if you have questions about its use, we are happy to advise you by phone.

Free shipping from €50 (Germany) – within the EU from €100

Delivery

Delivery is made to the delivery address provided by the customer during the ordering process. By way of exception, where PayPal is selected as the payment method, the delivery address stored with PayPal at the time of payment is decisive.

If delivery to the customer was not possible and the transport company returns the goods to the seller, the customer bears the costs of the unsuccessful delivery. This does not apply where the customer exercises their right of withdrawal by refusing acceptance, where they are not responsible for the circumstance that made delivery impossible, or where they were temporarily prevented from accepting the goods – unless the seller had given them reasonable advance notice of the delivery.

Shipping costs

• Germany: free from an order value of €50, below that €3.99
• European Union: free from an order value of €100, below that €14.99
• Switzerland: €20.00
• United Kingdom: GBP 20.00

Delivery area and delivery time

We deliver to Germany, to the 26 other countries of the European Union and to Switzerland and the United Kingdom. We are currently unable to deliver to other countries.

For deliveries to Switzerland and the United Kingdom, customs duties, import taxes or other charges may be incurred in addition; these are borne by the customer.

The delivery time within Germany is usually 1–3 working days.

Payment methods

You can pay by credit card (Visa, Mastercard, Maestro), PayPal, Klarna (purchase on account or instalments), Shop Pay, Apple Pay, Google Pay, advance payment by bank transfer or cash on delivery.

Cash on delivery is only available for deliveries within Germany from an order value of €50. An additional fee of €9.99 is charged for it.

Digital licences and activations

Update licences, secure gateway activations and HaynesPro access are digital goods. No shipping costs apply – you will receive the activation code by email once payment has been received, usually within 1–3 working days.

If the licence is tied to a device, enter your device’s serial number directly in the order form when purchasing. That way we can set up the activation for your device without further enquiries.

Please note: for digital licences the right of withdrawal expires as soon as we have begun providing the item and you have expressly agreed to this beforehand. For devices and all other goods, the statutory right of withdrawal applies unchanged.