Wiring shenanigans on a Chevy TBI - YouTube Click to view on Bing11:43In this episode we start to finish up the TPI to TBI conversion. All thing wiring, fuel lines and vacuum lines. Mike goes on a few rants of the do's and dont's of how to wire correctly. We are notAuthor: Garage Junkie OfficialViews: 12K How Throttle Body Injection ( TBI ) Works by Click to view on Bing11:09This video explains How the Throttle Body Injection Works. The focal point of the Video is the Mechanical side of it, involving the Fuel delivery. The video shows the main parts involved inAuthor: HOWSTUFFINMYCARWORKSViews: 30K TBI Wiring Harness – Affordable Fuel Injection TBI Wiring Harness. Starting from 265 This is a basic TBI harness for all engines using ECM 1227747 and 1228746 type ECM-many others can be used. Basic connections are standard but it is easy to customize one for your needs. Typically, Fuel Injection Conversion using a GM TBI EFI system! TBI Fuel Injection Conversion using a GM TBI EFI system! One of the most popular EFI conversions to older Chevy engines or any engine for that matter is the GM TBI system using the 1227747 ECM. There are many others that will do the same thing but the 1227747 is most well known and documented and will be the basis for this article.