I've done this but with a DW200 and also rewired the fuel pump at the same time. I have not had any issue thus far but yours does sound like either a loose connection or ground issue.
If you leave the silver cover plate off can you hear the pump prime when you try to start the car?
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2010 Sport - LS3 swap loading
2012 Frontier - BTWTuning VK56DE swap
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