light problem

I’m thinking about getting a full external lighting conversion to HID/LED fittings professionally installed by a reputable company (Loudz Creations in Adelaide), but have heard that this is likely to cause continual error codes to appear and that they can be riddled with issues when installed...

I have just recently changed my standard rear lights in my vt executive i put altezza rear lights in and the left side tail light does not work the brake light light works but the tail light doesnt it is the same light?? The left reverse light did not work but i had a read of a few forums and it...