maybe Garth has more research, but I just did a quick look and the original bulb was rated 5/21W, where the plasma is 8/8W (park/brake)
amps being watts over battery volts
5w/12v = 0.4 amps
8w/12v = 0.7 amps
21w/12v = 1.8 amps
so the Park circuit would be more, but the Brake is less
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