so im installing haltech into my 91 tt and im in the process of wiring the dual wide band controller. from my understanding the red wire is power and two black wires for ground and two outputs for the ecu can i wire the two grounds to the signal ground leading out of the expander box on the ecu? or do i just ground them to the chassis and not worry about the signal ground?? thanks
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wiring wide band controller - SeanSmith9119:05:57 06/15/15