HW307 Car Electric Pen L

An automotive test pen checks 12V/24V car circuits — it traces power, ground and signals when diagnosing wiring faults on vehicles.

Yes, our car test pens support both 12V and 24V systems, covering cars, motorcycles, trucks and RVs.

Touch the probe to each side of the fuse with the circuit on. If only one side lights, the fuse is blown. See the included manual for full testing steps.

Yes, they are a fast and reliable way to diagnose wiring faults and are widely used by mechanics and auto electricians.

We are the factory in Wenzhou. For retail auto parts shelves we usually recommend the HW304, HW305 and HW306 family at three price points, plus HW80 as a compact basic pen. If your channel is professional workshops, HW170 and the HW68A/HW68B digital display pens are what we position for those customers, with WILK302 and WILK303 as a separate branded series. Tell us your target market and price range and we will suggest the exact mix for your first order.

HW68A is the digital display car electric pen with a straight line lead, and HW68B is the same digital display design with a spring line lead. Both cover the same automotive testing role, so the choice comes down to which lead your customers prefer for reaching into a harness or cable. Check the specifications table on each product page for the exact voltage range and display features. We can mix both variants in one order so you can test sell-through before committing to a larger run.

Yes, you can mix models in a container order. We accept a mixed assortment across the car electric pen line, including HW170, HW304 to HW310, and WILK302 and WILK303, in one shipment. Each model still needs to reach its minimum quantity, so send us your quantity list and we will confirm the per-model MOQ and which items are in stock versus which need production time.

Yes. We are the factory in Wenzhou and we do OEM branding on the car electric pen line, printing your logo on models such as HW304 to HW310, HW170 and WILK302 and WILK303. You can choose a standard CHINYOO box, a plain bulk pack, or a custom box with your brand and artwork. Send us your logo and box design and we will confirm the printing and tooling cost before you order.

We serve both small trial orders and container-scale wholesale. Tell us the models and quantity you need, and our sales team will reply with pricing and lead time within 24 hours.

Yes. As a factory founded in 2008, we offer OEM/ODM services including custom labels, packaging and adjustable measuring ranges. Send us your specifications and we will handle the rest.

Our instruments are CE, RoHS and ISO 9001 compliant, and we can provide the relevant certificates on request.

Every instrument ships with a 12-month warranty. If a unit is defective, contact us and we will arrange a replacement or repair.

Orders ship from our factory in Wenzhou, and we can arrange FOB Wenzhou or FOB Ningbo, whichever suits your freight forwarder best. For sea freight we pack into cartons and pallets sized for a 20ft or 40ft container, and for small or urgent orders we ship by air or express. In-stock catalog models ship within 3 to 7 days after payment, while OEM orders with custom branding take 15 to 30 days depending on the work.

For bulk orders we work on T/T bank transfer with a 30% deposit to confirm production and the 70% balance before shipment. For larger amounts we also accept L/C at sight. For sample orders we take PayPal or full T/T in advance, so your first test order stays simple.

Yes, we encourage a sample order before you commit to bulk, so you can check build quality and calibration yourself. Samples are sent by express and usually arrive within 3 to 7 working days, and we refund the sample cost from your first bulk order of the same model. Just send us the models you want through the contact form or email, and we will quote the sample and ship on payment.

We provide a commercial invoice, packing list and certificate of origin with every shipment, plus CE and RoHS certificates and test reports when needed. Our export team prepares the documents to match your country's customs requirements and can amend them if your forwarder requests changes. The documents are sent by email ahead of the goods, so clearance at your port is not delayed.