TRAILER LIGHT TESTER 12 V - 24 V (Control box)
The trailer light tester is used for testing, faultfinding and repairing lights on trailers and caravans.
In the event of a short circuit, changing fuses is not necessary. Integrated automatic fuse - just press the button and continue the work. Switch guaranteed up to 20A.

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The trailer-light tester makes faultfinding on the truck or trailer easier |
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No unnecessary waiting time for the truck/ car, when the trailer-light tester is used.
In the event of a short circuit, changing fuses is not necessary. Integrated automatic fuse - just press the button an continue the work. Switch guaranteed up to 20A |
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Order no. 12125
Dimensions: L. 300M x W. 225M x H. 130MM
Weight: 4,3 kg.
Comes with a 2M mains cable
*The trailer light tester is, as standard, equipped with sockets up to 12 V - ISO 1724 and 24 V - ISO 1185.
*Mains connection with output : 200 W
*There is a switch from 12/ 24 V, and switches for each function.
*It is equipped with a short circuit fuse.
*Also available for 12 V trailers and caravans, and for external battery operation.
*Steel and aluminium casing. |
NEW! Trailer light tester with DC/ DC (direct current)
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Orderno.: 12126
The use of LED tail lights on trucks and trailers may cause some problems when testing the sockets of the trailer, as the LED lights do not like switched/ pulsed direct current.
G.S.E. has now eliminated this problem by changing the transformer in the trailer light tester to a DC/ DC direct current power supply.
The specifications and the cabinet is the same as the above mentioned. The output power on 12 V output is now 110 W, and the output power on 24 V output is now 200 W direct current. |
Trailer light tester 24 V, 7 pin + 15 pin
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Orderno.: 12250
The trailer light tester is now available in a 24 V version, equipped with a 7 pin 24 V - ISO 1185 socket and a 15 pin 24 V - ISO 12098 socket.
The tester functions in the same way as trailer light tester no. 12125, and has the same good cabinet and is equipped with the same specifications. |
Trailer light tester with DC/ DC (direct current)
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Orderno.: 12251
The use of LED tail lights on trucks and trailers may cause some problems when testing the sockets of the trailer, as the LED lights do not like switched/ pulsed direct current.
G.S.E. has now eliminated this problem by changing the transformer in the trailer light tester to a DC/ DC direct current power supply.
The specifications and the cabinet is the same as the above mentioned. The output power on 24 V output is now 200 W direct current. |
Brand new! Trailer light tester, 24 V, 2x7 pin + 15 pin socket
Extra supplement socket ISO 3731
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Orderno.: 12256
In Denmark it is becoming more and more common with 7 pin supplement plug on trucks and trailers.
Because of this a trailer light tester with a supplement socket ISO 3731 is now available.
This version is also equipped with a DC/ DC direct current power supply. |
NEW! Trailer light tester 12 V with battery
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Orderno.: 12150
Dimension: 225 MM x 120 MM x 90 MM
Weight: 2,4 KG. (without the battery charger) |
The trailer light tester no. 12150 is equipped with a battery. Because of the small dimension, it is both fast, easy and portable when you are going to control the light on your trailers.
The trailer light tester has a shock-proofed ABS cabinet fitted with a 7 pin socket, ISO 1724, 5 A battery and battery charger. There are switches and light diodes for each function in addition to a main switch.
By short circuit/ overload, the light diode of the main switch will turn off.
It is equipped with a battery indication showing:
100 % charged = 13,5 V
50 % charged = 12,0 V
25 % charged = 11,0 V (should be recharged)
The button "BAT TEST" has to be pushed down, letting the light diodes from the battery indicate the state of the battery before using.
The trailer light tester is protected against reversed polarity and overload by a 8 A automatic short circuit fuse. And the switches guaranteed up to 20 A.
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Orderno.: 12151
This trailer light tester is also available as a 13 pin version
This version has been equipped with 3 double working switches lowest:
Pushed down to the left:
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Pushed down to the right:
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| 8. Reverse |
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2 - 54 G Fog rear light |
| 9. Battery |
-in the center position 0- |
1 - L Left flashlight |
| 10. Power |
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4 - R Right flashlight |
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Brand new! Trailer light tester 12 V with running light and battery
Orderno.: 12155
By using the trailer light tester with running light you can avoid much walking while you are controlling your socket on the trailer.
Push down the button to automatic, and the light diodes of the concerned functions will lighten up/ flash in turn with the interval of few seconds.
By manually controlling, for example by repair, put the main switch to ON, and each function can be activated separately.
The cabinet and the specifications as the above mentioned.