The relay is powered up and activated thanks to a small electrical current. When it is activated, it lets a current that is much bigger than the original one flow through other two outlets. It is used to control the headlights, the rear fog light, the electric fan, etc.
First all headlights went out checked fuses relays all seem good. Battery good everything works except headlights. Now car won't start. It'll turn over if you make contact with relay but still not start. Plus at this time have to release shift lock to take it out of park
Bad relay I hope on my taillights. I check bulbs n connection. All good. Took lots of fuses. Anyway. I put bigger one in on a hunch I had n. Lights stayed on after I shut them off. Waited n blew fuse. Bad relay n switch...anything b great.
I have a 2001 sportage. Most of the time it runs fine; smooth acceleration, good power but on other times it acts like someting is shuting off. There is suddenly no power at all; it cuts out, than a couple of seconds later it kicks back on than off again. Sometimes it is so bad that i cannot move at all. If i let it cool down for awhile, it will work well for awhile than act up again. I changed the fuel pump, cleaned out the fuel tank replaced the fuel relay, and it worked well for several hours, about 500 miles on the highway, than quit again