Been working on my 7.3 swap. Got it to start and run over the weekend but I keep getting a p0221code for throttle switch "b" performance. I am using 2000 engine side harness and I repinned the dash harness to add the electronic pedal. The red/yellow wire I hooked to a 5v reference wire. The other 4 I ran directly to the bulkhead connectors going to the computer. Any ideas what I did wrong here? Truck will start but there is no pedal/acceleration. Thanks in advance.