I hoped to be on verge of a 1st engine start, but after confirming all pin callouts for P1, 2&3, I plugged everything in and still have a blank / unpowered screen.  As long as P3-9 has 12 V, and P3-8 goes to ground, the screen should light up?  How do I know if it’s an LCD?  I would assume “no”, since the instructions say I would have been provided with “prewired dimmer switch”.  
Thanks for any suggestions

Doug



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