i just recently converted my ek with power window conversion and now i am having trouble starting my car..well the power windows work but sometimes my car will just die after five seconds or it just wont start...the stock floor harness was switchd with a 99-00 ex floor harness and the problem im having is that when the key is to the on position on the ignition, the fuel gauge will sometimes drop and the car wont start..the fuel gauge will only rise back up slowly when i stomp on the floor....iv already tried switching my main relay and still no go...this only happened after the window conversion...could it be a ground problem or wires that are shorting?

 

im thinking about doing the same thing to my civic hatch. are your doors off a ex or si? was it pretty simple to plug up the floor harness?

 

sound like you are having a problem involving the sending unit/fuel pump.
check the wiring of the floor harness back to those. you may have a loose wire or connection somewhere along there