Sure
The headlight switch can remain as is . This will drop the load on the switch down to Milli-amps
A typical relay has 5 connections 85,86 switching circuit & 87,30 load circuit & 87a which is not used , these pairs of terminals are across from each other on the relay .
I usually hide the relays behind the left headlights in front of the rad wall .
The stock headlights use a red & purple wire for low & high beams so the red & purple wire from the firewall / headlight switch go to the 85 terminal on both relays , one to each relay , the red & purple wire attach to the 87 terminal going out to the headlights .Neither of the wires need to be extended as the wire will reach both sides of the relay as is .
The 86 terminal is grounded , I ground to the bolt by the battery tray where the headlights are grounded , this wire is also basically hidden .
I run a 14 ga wire from the battery terminal on the start relay out to the #30 connection on both relays , & I install a fusable link into that wire for safety,this wire will need to be taped into the harness to hide it .
Now the current for the headlights runs from the start relay on the inner fender through the headlight relay directly to the lights , the power through the firewall & headlight switch inside the car is extremely small & only activates the headlight relay
