Sale ends todayGet 30% off any course (excluding packages)

Ends in --- --- ---

How to make Canbus device ‘drops’

Practical Motorsport Wiring - Club Level

Forum Posts



Tech Articles

Discussion and questions related to the course Practical Motorsport Wiring - Club Level

= Resolved threads


What is best practise for creation of a Canbus from scratch? I am wiring up the race car that has had all wiring stripped. Have ECU, dash/logger, MSEL isolator, and PMU. All Canbus capable. I will set the ECU and ADU (dash) as terminators at each end of the bus.

they are easy - each end of the twisted pair terminate into their plugs.

my question is how do I physically wire the two other devices (MSEL and PMU) ? Some sort of drop from the bus? Do I just create a loop and terminate two wires into each High and low pin? Or do I take a single wire from high and single from low and splice them into main bus?

thanks, mike

I try and make my bus run through the car in such a way that I can bring each unit off the bus as a node. These nodes should be less than 500 mm from the bus ideally. Then of course you need a terminating resistor at each end of the bus. A nice way of splicing your nodes into the main bus is to do this off the back of a 2 pin (or 4 pin if you're adding 12V and Ground) DTMN connector. I use an open barrel splice and splice into the bus behind the connector where it can be hidden behind the boot and strain relieved.

We usually reply within 12hrs (often sooner)

Need Help?

Need help choosing a course?

Experiencing website difficulties?

Or need to contact us for any other reason?