How do I know if a power liftgate supplier is a real factory?

Ask for the vehicle-specific harness drawing, the ECU model list with vehicle codes, and a video of the assembly line. A trading company cannot produce harness drawings per model because they do not design them.

What is a reasonable warranty on a power liftgate kit?

One year is the industry norm for struts, ECU and latch. Be cautious about lifetime warranty claims, which usually exclude the parts that actually fail.

Why does plug-and-play matter for a distributor?

No wire cutting means lower installation failure rates, fewer warranty claims, faster installation time and a product that can be removed without trace. For installers this directly affects repeat business.

How to Choose a Power Liftgate Supplier: 9 Questions to Ask

Most power liftgate problems are not manufacturing defects — they are specification problems. The wrong harness for the model, an ECU that does not read the factory bus, anti-pinch logic that is too slow, or a "one-size-fits-all" kit that needs cutting. All of these are decided before you place the order.

Here are the nine questions that separate a real manufacturer from a reseller, and the answers you should expect.

1. Is the harness vehicle-specific, or universal?

A proper kit ships a harness designed for the target model: correct connector types, correct pinout, correct length, correct routing. A universal harness means the installer cuts and splices — which defeats the entire point of a retrofit kit.

Ask for: a harness drawing or photo for a specific model. A factory can produce one in minutes. A trading company usually cannot.

2. Does the ECU read the factory protocol, or use a bypass module?

There are two approaches on the market:

Protocol reading: the ECU listens to the vehicle's existing CAN/LIN traffic and issues commands. No programming, no coding, and the vehicle's own remote and dashboard switch keep working.
Bypass modules: a separate module intercepts signals. Cheaper, but often breaks factory remote functions or requires coding.

Ask directly: "Does the kit require any programming, coding or matching after installation?" The correct answer is no.

3. What is the closing speed and anti-pinch response time?

Anti-pinch is a safety function, and in some markets a regulatory one. Slow response means a hard stop, or worse, no stop. Ask for the maximum closing force and the response time in milliseconds — a supplier who has tested this will have numbers.

4. What is the strut construction?

Aluminium or steel housing?
Single or dual motor?
Measured noise level in dB at one metre?
IP rating, and salt-spray test hours?

For Southeast Asia, the salt-spray and humidity performance matters more than in dry markets. Ask for the test standard, not just a claim.

5. Is the kit complete?

A complete kit should include: two struts, upper latch (soft-close), ECU, main harness, front and/or rear switch, model-specific brackets, hardware pack, warning labels and an installation manual.

Missing brackets and hardware are the most common hidden cost — the installer has to fabricate, and the customer blames your brand.

6. Are the labels and manual export-ready?

If you sell in Thailand, Indonesia, Malaysia or Vietnam, bilingual warning labels and an English manual are not optional. They also matter for insurance and liability if an incident occurs.

7. What is the actual warranty, and on which parts?

One year is the industry norm covering struts, ECU and latch. Be sceptical of "lifetime warranty" claims — read what is excluded. Ask:

What is the claim rate, and how is it measured?
Do you ship replacement parts first, or require the faulty part returned?
Who pays the freight on a warranty claim?

8. Can they do OEM / ODM?

If you want your own brand, ask about: custom packaging and labels, custom ECU identification, minimum order quantities per model, and whether they will develop a model that is not in their catalogue.

9. How many models do they genuinely cover?

Model count is the clearest indicator of engineering depth. Ask for the model list as a file, then spot-check three models you know: do the brackets look model-specific? Is the harness length plausible?

Red flags. Universal harnesses sold as "plug and play". No harness drawings available. ECU with no model identification. Anti-pinch questions answered with marketing language instead of numbers. Warranty that excludes "electrical components" — which is everything that can fail.

Quick checklist before you order

☐ Vehicle-specific harness confirmed (drawing or photo seen)
☐ No programming required, in writing
☐ Anti-pinch force and response time provided
☐ Strut housing material, motor count and dB level provided
☐ Complete kit list including brackets and hardware
☐ Bilingual labels and English manual available
☐ Warranty period and claim process in writing
☐ OEM/ODM terms and MOQ per model
☐ Model list file received and spot-checked

Where JYJ stands on each

We build vehicle-specific harnesses for every model in our catalogue — 524 power liftgate programs, 628 electric running board programs and 202 OE strut references. Our ECUs read the factory protocol, so no programming, coding or matching is ever required. Struts are aluminium-bodied dual-motor units, and every kit ships complete with brackets, hardware, bilingual labels and a manual. All three product lines carry a one-year warranty, and we support OEM/ODM including packaging, labels and new model development.

If you would like the model list, or want us to check a specific vehicle, send us the details.