My. Low beam headlights and my power door locks quit working! Help please

Yes I've checked every fuse on both fuse boxes and as far as I know nothing shorted out I didn't have sparks an didn't hear anything short out and it's only the low beams and door locks I have power at the fuse box but not to the light sockets I've checked the hot wire from lights and there isn't a break anywhere in the wire I'm so lost and yes it was working before the swap oh and I tried a different starter also and tried lights with starter unplugged also

Turn on the headlights, low beam and TEST the fuses under hood again.... with the test light. See if you can get the lights working first! What i am thinking is the low beam fuse may not power up at all for testing unless lights are on...... try it ...wth! One more thing....is this a customers vehicle? If so are YOU sure these items were working before?? This doesn't make ANY sense to me...2 completely different circuits!!!

Ok I replaced the pigtails and sockets for the lights and they now work but my auto door locks still don't work and I just checked the fuse again and it is not blown