2012 Ford Fusion High Beam wig wags

As I research more, I believe that what I am trying to do can be accomplished with diodes. Now I just need to find some diodes that can handle the wattage. If I can do that, I should be able to put a diode on the positive wire just behind the left headlight but in front of the positive wire to the right side and then put a second diode on the positive wire going to the right. If it works, I should be able to tie in on both side between the diode and the head light... Does this seem like a reasonable plan?

I don't know much about diodes but I was under the impression that zener diodes aren't forward bias. I was looking into schotkky diodes because they have less resistance than standard silicon diodes. Based on what I read, the high beams should be about 65 watts. And since amps x volts = watts, I'm thinking a 1 amp 100 volt schotkky diode should do the trick. If my information is incorrect, please let me know cuz I only want to have to do this once.