Morimoto HID Headlight Low Beam Issues

When you say it happens to both left and right headlights, do you mean they are both off and then magically come back on 5-10 minutes later at the same time? Or do they both take their sweet time turning on, but they aren't synchronized?

 

Ok well it does seem that you have a single point of failure causing the problem to be in both places. When I wire HID installations, I use a relay side. Are you saying that you use 1 relay to power both ballasts?

 

Well it is just a relay, you could wire it any way you want to. I've used the Morimoto ballasts in the pasts, and just buy the extra connectors and make my own harness. Each ballast has its own relay.

In your case if you have just one relay powering both, then I would agree with your original diagnosis. The failure is likely a single point failure between the combination of signals or upstream. It is unlikely that the Prius itself has a headlight fault where it is turning the headlights on and off. And the only thing between that and the split, is the relay and wiring harness.

Could be a bad relay. Could be rodents have chewed threw part of the wiring, etc. But that's where I would start looking.

 

the morimoto harness has TWO relais/
both headlights igniting synchronous means that either both relais are screwed & fire up at the same time neway (very very unlikely) or a way more possible explanation would be that either the ground contact or the plus contact don't have a firm contact or the bulb input from the original plug is kinda lose/
shouldn't take too long to check this three things/

 

leds are not on a par yet with hids/
give it another year.../

 

go check out hidplanet.com
that'll give you all the information you need & more..../