This simple ECU has 5 pole or circuits and the main power circuit. It draws power from the battery and powers lights through relays in the ECU. Therefore the car computer does not know it is connected as there is no extra circuitry or resistance that can be detected by the vehicle computer.

Stephen Wotherspoon
Known for his extensive wisdom, Steve shares his expertise to help bridge the information gap in the industry, making sure everyone can hit the road with confidence.
How to contact our Technical Team
Email: sales@couplemate.com.au
Phone: + 61 7 3348 38 22
How to Reduce Dangerous Caravan Vibration Fatigue
If Vibration Fatigue can bring down a Boeing 747, you can be sure it will bring down your Caravan too. Boeing has taken precautions against vibration fatigue and so should you. Consider the following article, there may be a few precautions you can take or at least check.
Why U-bolts May be the Major Cause of Accidents
U-bolts are the only thing holding your entire caravan onto the road. They bind your axle to your springs. Faulty U-Bolt installation can cause major problems with caravans when u-bolts are not checked for tighness..
New Caravans and Weighbridge Certificates
Need a weighbridge certificate. Download a PDF file of Australian weighbridge locations. Note: Call them before arrival.
Trailer Axle Types: Overlay Axles
Overlay axles have undergone changes, with companies and brands manufacturing them in different ways. This guide will help you understand this popular trailer axle type. Outline of Topics: What is an overlay axle? Can you invert an overlay axle? What signs should you...
How Long Do Caravan Shock Absorbers Last?
Customers regularly ask, 'How long do caravan shock absorbers last?' Unfortunately, the answer is not straightforward and can depend on various factors. Generally, shock absorbers should last between 50,000 km and 100,000 km, but this depends on factors such as...