Alternately, you could upgrade your existing headlight wiring to run off relays. The factory wiring, and headlight/dimmer switches were inadequate... they will probably still be inadequate with the new bulbs. This link explains the whys & hows.. very easy and worthwhile upgrade for much brighter lights.
Detailed technical information: Fix dim headlamps!
www.danielsternlighting.com
Basic relay wiring for this, four terminals: 1. full power from batt; 2. Ground; 3. Existing wire from headlight switch (hi or low); 4. New wire to headlight.
Two relays are needed, one for the high beam circuit and one for the low. I did this mod and recommend it highly, it’s easy and cheap. You can use generic relays and wire from the auto parts store or wherever.. buy the relay kit with the connector/pigtail included. FYI, there are five terminal relays also. These can be used as well, just one of the wires is unused in this application.
Arrives by Mon, Feb 5 Buy JEGS 10556 Waterproof Relay & Pigtail 30 Amp Sealed Connector 6 Long Wires on Pi at Walmart.com
www.walmart.com
I upgraded to ceramic headlight plugs just to simplify my wiring.
Arrives by Wed, Feb 7 Buy Unique Bargains 4 Pcs H4 Ceramic Socket Orange for Car Headlight Fog Light Lamp at Walmart.com
www.walmart.com