AOHEWEI 13 Pin Trailer Lights Plug Socket Tester Wiring Circuit Diagnostic

Purchased this because I recently had a new 13 pin plug fitted to my caravan by the service engineer. Unfortunately the plug just fell apart when we were on a camp site. So having a few spare wires and the indicator lights not working, rather than risk blowing the electrical system on my car, I purchased on of these testers. Does the job very well and sorted my problem out without having to connect the car to the caravan, and risk damaging my car electrics. It checks the wiring circuits on the caravan to the plug ok, but it will not check the light bulbs are working.

Does exactly what it says and reasonable price too

Wanted to check electric socket on my car. A simple multi meter didn't show a permanent live to the socket so decided to get a proper tester. When I plugged it in the display faced away from me and I couldn't read it (due to retractable towbar). I had an extension cable and tried it with that but still no power indicated. Then plugged the caravan in and it did show power, although switched and perminate are the wrong way round as stated in previousl reviews. I guess it needs something earthed for it to operated the Can Bus detection system to work. Not perfect but put my mind at rest.

Identified the problem straight away. Very easy to use. Recommend to all caravaners.

Sent back as didn’t work , lights randomly worked but not in correctly better off using a volt meter and a 12v battery to test pins and lights

Brilliant piece of kit

Works well and helped to find fault to avoid expensive call out.

Bought this to test newly installed towbar electrics on my Volvo XC90. The electrical wiring used for the towbar was the genuine Volvo kit with the Volvo towbar module. In other words, the official kit recommended by the cars manufacturer. The unit is very easy to use. Install a 9 V smoke alarm type battery (not included), and then plug into the towbar, electrical socket, and check that the appropriate LEDs light up and go out when you activate brake lights, reverse lights, indicators etc. The unit can also be used the other way and test the lights et cetera on a trailer by pushing a button on the side of the unit. I can’t comment on this as I haven’t tried it, but on the face of it would appear to be very useful. So on paper it’s all good, but in use, there are a few problems. Firstly, after installing the 9 V battery, the battery cover will not reattach. This means you have to leave it off while you use the unit. Not the end of the world, but it’s likely to result in the cover getting lost at some point. More worrying is that the test LEDs on the unit for permanent and switched lives are wired back to front. At first, I thought there was an issue with my towbar wiring, but by using a multimeter against the appropriate pins, it was obvious that the towbar is correct, but the tester is wrong. And once you start needing to use a multimeter to verify what a test unit os telling you, you may as well just test the lot with a meter using one of the readily available towbar wiring pinout diagrams online. The final issue, which may be specific to this car/towbar wiring is that the pins for both left and right hand indicators always retain a voltage even when not in use. This voltage or at least the current behind it is not enough to light a conventional filament type bulb in a trailer board. However, it does illuminate the LEDs on the tester which shows as both indicators being permanently “on”, indicating a fault in the wiring that actually isn’t there in practice. The unit does what it says on the tin, and does provide a good quick check of wiring, but with the incorrect wiring of the two live feed indicators, and the false reporting of a fault on the indicator circuit on my car, I found I couldn’t really trust what it was telling me, and that I needed to manually test the connector pins on the car with a multimeter afterwards. once you go down this road, you may as well just test the whole thing with the multimeter and save the money. Given it three stars, because it does work of sorts. But I found that two of its test LEDs weren’t wired correctly to start with meaning I needed to verify and check manually what it was telling me.

Idéal pour tester la prise voiture et la prise caravane.

Das Gerät lässt sich sehr einfach bedienen und zeigt sofort die Fehlerquelle an. Bei einem Massefehler muss man allerdings immer noch die fehlerhafte Klemmstelle suchen. Ich bin aber trotzdem sehr mit dem Tester zufrieden, für die schnelle Fehlersuche ist das Gerät wirklich sehr gut und von jedem intuitiv zu bedienen.

Great but have to look at it directly from above otherwise looks like other lights are lighting up for different locations when looked at an angle. For example I thought my fog lights were the turn signal false positive but it was the left turn signal all the way at the base blinking and made the fog lights also look like they were blinking too. All was wired right and correct after I tested everything again

Arrivato rapidamente, utilizzato con facilità

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