I'm using the H1 for a high beam.

I noticed on the H4 light there's three prongs, but only two are used. The H1 has two prongs, does it matter which side is ground or power?

The only thing I can think of is to possibly switch the wires around on the H4 bulb harness, maybe the other prong not used is the one that is suppose to be...

thanks for the feedback