GT500OC

If you read any of my earlier posts, I am getting a FLI DTI DATA ERR message that has something to do with the fuel guage pickup and a lot of suggestions came in, but none of them solve the real problem which is NO power is making it to the FPDM in the truck (either one of them). Anyone know a way to properly check these or go around them and hard wire a switch in to turn them on/off to get my GT500 back on the road for Irwindale this Friday?

Any feedback will be appreciated!

GT500 OC