How to Connect AEM Wideband to SCT Tuner

How to Connect AEM UEGO Wideband 30-4100 to SCT Tuner using SCT Analog Cable 9608.

Printable version: How to Connect AEM Wideband to SCT Tuner.pdf

What's Required

AEM UEGO Wideband	SCT 9608 Analog

Here is a link to the AEM Instruction Manual.

Diagram from AEM RED (Power) - Connect to a switched 10-18 volt power source utilizing a 10A fuse. BLACK (Ground) - Connect to a clean power ground. WHITE (Analog Output) - Connects to any Stand Alone ECU unit that accepts a 0-5 volt input. BLUE (Serial Output)(optional hookup) - Connects to a RS-232 com port for hyper-terminal data logging.
Diagram from SCT Black - General Ground Orange - Analog Input #1 Blue - Analog Input Ground #1 Red - Analog Input #2 Green - Analog Input Ground #2
Connect AEM White to SCT Orange | Connect AEM Black to Vehicle Ground and SCT BLUE AEM Wideband Formula in Air Fuel Ratio = (v*2)+10 AEM Wideband Formula in Lambda = (v*0.078557)+0.751 If you have any ground offsets, add or subtract them from the voltage (v). For example, for a .125 voltage offset, ((v-.125)*2)+10. Your gauge should match the reading on the tuner/livelink exactly.