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2004 Scion xB
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35 Posts
Discussion Starter · #1 ·
Have had this xB for almost a month and found out today that the right side high beam doesn't work, the low beam works, but not the high beam.
I tried replacing the bulb. I attached it the connector, then just switched on the lights before putting it back in to see if it would up the engine bay, same issue.
Low beam works, hi beam out. I checked the fuse under the hood, it wasn't blown.
2004 model, Stock 9003 bulbs.
 

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469 Posts
Have had this xB for almost a month and found out today that the right side high beam doesn't work, the low beam works, but not the high beam.
I tried replacing the bulb. I attached it the connector, then just switched on the lights before putting it back in to see if it would up the engine bay, same issue.
Low beam works, hi beam out. I checked the fuse under the hood, it wasn't blown.
2004 model, Stock 9003 bulbs.
Welcome to the club! It could be the connector. They're cheap to buy- try replacing the connector. I've seen this issue before but in 2nd Gen. Maybe try that first. Others may chime in.
 

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I replaced the connector, which helped out the lobeam, but it looks like a I have a dead Hibeam wire.
You need to discover if the (possible) bad wire is the B+ power supply wire leading into the bulb circuit or if the (possible) bad wire is the Negative (ground) wire leading out of the bulb socket.

You will need a power probe tester to test the B+ power wire.

You will need a continuity tester to test the negative (ground) wire .
 

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2004 Scion xB
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35 Posts
Discussion Starter · #6 ·
Well, I know it's not the bulb because I basically took the old connector off, it was spliced by stripped wire wrapped together with electrical tape around it. I took the harness wires individually and put them into the holes on the bulb connectors in various positions. The lobeam wires work fine, but the high beam wire is not working. The high beam on the bulb worked when the lo beam wires were attached in that configuration.
 
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