Okay so I just wanna see if my hypothesis is true.....So basically I am in the process of installing my aftermarket HID Fog Lights (P.S. I had to custom fit the HID bulb inside) to a switch inside my cabin. When I wired 1 lights to the switch it worked perfectly fine but when I wired up both lights to the switch they both turned on for a second then 1 of the lights flickered and competently turned off while the other side stayed on...Could these be caused because the switch isnt "strong enough" aka but a heavy duty switch which has a 30AMP rating???thanks!
Quote:
Google voltage dropOriginally Posted by calgutie
Could these be caused because the switch isnt "strong enough" aka but a heavy duty switch which has a 30AMP rating???! http://en.wikipedia.org/wiki/Voltage_drop
You never control high load items directly through a switch.
The long run of cable from the batt to the switch inside then back to light means unless you use a massive size cable
you will not get the voltage required ( plus it has the potential to overheat and burn your car down
)You power them up through a relay and use the switch to operate the relay
So you have a thick fused wire from batt to relay to lights; then a small wire from the switch inside to the relay
Read
http://www.mp3car.com/the-faq-empori...ire-it-up.html