How do I wire up this transformer for 110V mains?

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I think they are just extra connectors (leave them open by insulating them) they are the same color code.
parallel 120V PRI windings ( dots to dots) or BLK to BRN and WHT to BLU etc

If your 110 is really 120 > No load voltages s/b close to 43 VDC
Boderline HV >>> PS let use know if your chip amp does OK with your mains measured.
 
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