IF im reading the diag. correctly, which i have tried 100 times lol.
for.. low beam you need to make sure the following are connected
White Wire to headlight, brown white (constant) , Yellow, and White wire on harness which all are positive.
for high beam,
Blue wire going to headlight, brown white (constant), yellow and white wire on harness which are all positive.
correct?
this should fix my brake light issue, and also solve my question about high low.