Hello, is it possible to connect two KL interfaces to one OBD bus. Would it cause too much load or interfere with the correct operation of the bus?

Thanks

It is electrically possible but you can not send data with two interfaces in the same time.

I tried it out, I actually have an ELM323 circuit from http://www.bynkaay.com/productdetails.jsp?PID=108 in my system at the moment but have now added the KL interface in parallel.

To ensure I did not overload the bus I ommitted R1 the 510ohm pull up on the K-Line from the KL interface.

I will run with the two in parallel until I migrate my software completely over to the KL interface.

In order to minimise the software changes I may write some functions to mimick the ELM323 9141 functionality but running over the KL interface.

I tried it out, I actually have an ELM323 circuit from http://www.bynkaay.com/productdetails.jsp?PID=108 in my system at the moment but have now added the KL interface in parallel.

To ensure I did not overload the bus I ommitted R1 the 510ohm pull up on the K-Line from the KL interface.

I will run with the two in parallel until I migrate my software completely over to the KL interface.

In order to minimise the software changes I may write some functions to mimick the ELM323 9141 functionality but running over the KL interface.