What type of power supply should I use with the Rev Burner?
The Rev Burner requires a power supply with an output voltage from 12V DC to 20V DC. Both unregulated or regulated (or switch) power supply are ok, unless the output voltage is 12V. In this case an unregulated unit must be used. The power supply must have a 2.1mm center positive plug.
What are the power supply requirements in terms of current?
The maximum output current depends on the type of rev counter/speedometer used. Most of the time 500 mA is enough. You can use power supplies with output current up to 2A.
What can I do if my rev counter or speedometer or dashboard needs more than 2A of current?
Because the Rev Burner can output no more than 2A of current, you have to connect the power supply directly to the rev counter or speedometer, without going through the Rev Burner board.
In this case the 12V power supply must be of type SWITCH or REGULATED. This means its output is regulated to be exactly 12V by the power supply itself, and not by the voltage regulator onboard the Rev Burner.
If you don’t use a switch (or regulated) power supply, the rev counter or speedometer will receive a voltage higher than 12V and might get damaged.
Also the ground from the power supply (it’s the negative wire) must be connected to the ground of the Rev Burner (it’s the terminal labelled -). This is a picture describing the connections:
In this configuration the led onboard the Rev Burner won’t turn on when the power supply is connected to the main.
When the shift light of my Autometer rev counter turns on the needle starts jumping. Why?
This happens because the shift light of some Autometer gauges requires more current than the amount the power supply or the Rev Burner are able to supply. To solve this issue use a power supply with a bigger current output.
Some shift lights are so power demanding that they need more than 2A of current (the maximum the Rev Burner can supply). In this case use a regulated 12V power supply and connect everything like in the picture above.
How should I connect two Rev Burners to a dashboard?
Dashboards require more than 2A of current, which is the current limit for the Rev Burner. You need to use a 12V switch power supply rated for 4A or 5A. It must be connected to the dashboard and the two Rev Burners like in the picture below:
