Originally Posted by
lynchfourtwenty whats neat about the breakout box is you can actually use it to power and ground your wideband, then ground the breakout box to the intake manifold like the ecu does.
Most wide bands are powered by 12V. The 5V supply from the break-out box can be used to power MAP sensors and other sensors that require 5V, like thermistors (temperature sensors) for example. Note that thermistors also require a resistor (5k ohm typically) in series with the thermistor with the NEMU analog input connected between the two.
Like this:
o-----^v^v^-----o-----^v^/^v^------o
+5V....5kohm......NEMU...thermistor.....ground
Dave