2015 Prius hids flickering

This is why don't go cheap on lights. These eBay kits with funny names are all junk. I've been doing lights for over 10 years (14 years actually) on all kinds of cars. If you want nice stuff, gotta go factory. There's some nice aftermarket stuff too out there but they cost more than generic.

I'm doing a full Lexus conversion on my Prius very soon. I'll post a thread when I'm done.

 

I'm looking forward to seeing the results of your Lexus retrofit project. There are some of us running with the JDM HIDs. They're nice lights but the cutoff is wrong for a LHD configuration.

 

Use one of the two open terminals toward the back of the engine fuse box. In this picture, they are the ones with the red wires running to them. They are 12v always hot power, just like connecting to the auxilliary battery. Use a 1/4" push on terminal on your power wire. Alternatively, in the picture, there is the bolt where the screwdriver is pointing to , under the opened cover. That is 12v positive, directly from the battery.

 

Yes, they are the blade terminals at the end of the red wires in my picture above.

I make all connections, then connect to those hot terminals last, without disconnecting the 12v auxiliary battery.

I would not suggest using a splice type connection for main power to HID ballasts, that is the main reason why you use a relay, to switch power directly from the battery or other high amperage source.

 

1. See DDM Tuning to see what they offer that might do the job. I use them for my Honda MOTORCYCLE.

2. Flickering is the product of the ballast being undercharged. Most ALL HID systems have a capacitor to help get the HIDs up and steady, but drops in voltage (weak battery or heavy drain affecting power supply) will make them flicker. On my motorcycle, I've seen the HID flicker at idle...especially if the battery isn't at 90%+ at start up. Sometimes it comes on, and if I test the turn signal, it will go out when the turn signal lights up. At higher RPM (increases system voltage) or after running a while, this no longer happens.

It SHOULD NOT be an issue on most vehicles, but the Prius (more than others) might limit the output on the headlight circuit (someone more knowledgeable can chime in on this), and that means it needs either more power or a setup that more adequately manages with the power available. DDM Tuning's slim ballast setup works on motorcycle 12 volt systems, so I'd expect them to do fine with a Prius.

 

I had the same issue with 3 different brands of hids.. Finally found a set that i bought on amazon. OPT7 HID Conversion Kit and went with their 5k color 55watt kit.. No flickers and no relay addon required. I plugged straight into the factory socket. These were around 70$ a year ago when i got them.. No issuses or flickers since installing.
Fyi.. I tried ddm tuning they flickered after 2 days
amazon.com/OPT7®-Xenon-Conversion-Harness-Capacitors/dp/B00CC2ZU4K

 

I purchased the 35w version of the OPT7 HID kit, without the relay harness:

Amazon.com: OPT7 Bolt AC HID Conversion Kit - All Colors and Sizes - H11 (H8, H9) - 5000K Pure White Xenon Light - 2 Year Warranty: Automotive

I installed it with a homebrewed 14 gauge dual relay harness on my Camry, power straight from the positive battery terminal. No issues with flickering.

 

Yep.. Didnt even install the harness and never had a flicker in the last 30k miles. OPT7 all the way

 

DRLs aren't normally on with the lowbeams? Even if they are, it shouldn't affect the HID ballasts.

Installing the HID harness should help (can't hurt).

Make sure you check all connections, if you have ground wires to connect when installing the HID harness, ensure that they are good metal to metal contacts