I'm looking for a bit of help troubleshooting. I just purchased a set of morimoto projectors for my 08. I set the system up before I reassembled the entire front end and found that when I turn the lights on they only light in the high beam position and the solenoid only switches to the low beam position if the lights are turned off. The light switch on the dash shows switching from the high to low position. Anyone lend a hand?

 

Try swapping the lo and hi beam wires.

 

Still no go. Received a new harness and still same outcome

 

Ground wires (left and right) are lighting up a test light. And when touched to chassis, spark. No power supplied to harness except thru power line on harness and connector from cars original harness. Not good, any insight?

 

switch the solenoid wires they are backwards

 

Hum... you need to take a picture of what you are talking about.

Is your harness running power directly from the battery through a relay?!?

If not, I'm betting there's the problem, the Fit doesn't power the H4 like most other cars... supposedly, there's one power in and TWO negative/ground out instead of two in and one out.

The solenoids could therefore be "correct" just wrong for the Fit, you'd have to reverse the wires like others have mentioned.