dave w
1/2 ton status
I spent a few hours making a Bench Harness for Flashing PCM's. I got the idea for making a Bench Harness surfing the internet. I used schematics to figure out the wiring. A PCM only needs four inputs; Battery +, Battery -, Switched on/off Battery +, and the Serial Data for flashing. The Serial Data is sent to the PCM using the Flash Scan V2 tool and a Laptop (not pictured) I made the Bench Harness adaptable, so I can flash different PCM using adapter cables. I'm now set up to flash either Vortec PCM's or LS PCM's. I built mine for less than $20.
If you don't have the time to build your own Bench Harness, EFI Connections will help you out. http://www.eficonnection.com/eficonnection/BenchtopProgramming.aspx
dave w



If you don't have the time to build your own Bench Harness, EFI Connections will help you out. http://www.eficonnection.com/eficonnection/BenchtopProgramming.aspx
dave w
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