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Old 08-24-2019, 08:59 AM   #109
DeeBee
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Finally, I have success!!

The low beam stays on when I select the high beam

I used a 6A 400V rectifier diode between the low and high beam ground wires connected to the low and high beam relays.

So far the result is what I have been looking for

Thank you all for your help along the way!!!
This was short-lived

My HID's started flickering intermittently

After some investigation I found that the harness I used had started melting connectors Not sure if the diode "fix" was responsible but I was lucky my headlights did not shut off on me while driving on a dark road or highway.

I had to disconnect everything and I'l have to do this install all over again in the summer! I think this time I'll look for one of the Morimoto harnesses that have been great in the past.

Looking forward to bright headlights again....
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Old 08-27-2019, 03:55 AM   #110
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I too went from diode between the hi and low to Morimoto MotoControl. Best thing ever. But i do hate these housings for retrofitting (Morimoto Mini D2s 5.0) ... my driver side high beam solenoid must have been disconnected. But I have 2 six inch light bars in the grille for high beams that do so much more.
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Old 08-27-2019, 10:16 AM   #111
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I too went from diode between the hi and low to Morimoto MotoControl. Best thing ever. But i do hate these housings for retrofitting (Morimoto Mini D2s 5.0) ....
I have had Morimoto Mini H1's and D2S' on Rav4 and Corona and they were fantastic. On the Yaris I'm holding out since I have a working JDM setup. I think the D2S 5.0 will be the next upgrade. For now I'm looking to get a Morimoto harness to drive the JDM units for another few months before I decide to upgrade.

What's the issue with the housings? I'd think it would be easy since they are big. My Rav4 had really small headlights and it was a pain trying to get the projectors in right.
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Old 08-27-2019, 07:44 PM   #112
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You still have to cut around the OEM bulb opening to fit the thread of the projector. Also threaded on without modification means the beam is too low. You run out of vertical adjustment. Could well possibly be I'm using aftermarkets housings as I dont have 08 style OEM, my car is 09. But the aftermarket allows me to have horizontal adjustment.

Mini D2S 5.0 is much better than the 4.0 IMO. the step isnt as big. I hated the dead zone of light on the lower step. Highbeams always looked good for these projector price range.
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Old 08-28-2019, 12:45 PM   #113
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Thanks for the info. I'll certainly take a good look at vertical adjustment when I make that move.
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Old 12-29-2019, 06:52 AM   #114
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Evening all,

So after having the HID's in I'm starting to get sick of the pee coloured H7 high beams, so have been considering changing the high beams over to LED''s. Anyone else done this with the current draw from the HID headlights? Currently running a 15amp fuse.

If so, I'd be interested in what peoples impressions with moving over from halogen high beams to led.
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Old 12-29-2019, 07:13 AM   #115
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I change mines to LED and the different is BIG!! Try it!!
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Old 06-01-2020, 04:11 PM   #116
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OK I was wrong last year about the Negative Switched, and before I go back out and start hacking on my cars (ok being too lazy, and at work, to go back out with my meter) I wonder if any of you experts know... IS The Positive Terminal on the H4 Halogen lights (Right at the bulb) "Hot" ALL the time?

OR Hot ONLY when The Headlights are turned ON?

Your Input is Appreciated!
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Old 11-15-2020, 02:44 PM   #117
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Hi guys, so after 3 years my low beams suddenly stopped working the other day. High beams and everything else works. I’ve checked the engine bay 10 amp fuse and they are fine. Any idea where I should look next? Thanks
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Old 11-15-2020, 05:17 PM   #118
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ballast and bulb. its 90% most likely the bulb. both went out at the same time eh?
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Old 11-15-2020, 09:39 PM   #119
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ballast and bulb. its 90% most likely the bulb. both went out at the same time eh?
Yes, at first I doubted both bulbs would go at the same time so I just ordered 2 D2R Osram bulbs from Amazon. I also tried switching out the headlight switch with a new one from Toyota and that didn't work. We'll see if the bulb solves it. Thanks
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Old 11-22-2020, 06:34 PM   #120
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wait you're using d2r with toyota ballasts? that might not be good...should be using d4rs... D2Rs use a good deal amount more energy to light up. It just might be your ballasts too!
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Old 12-20-2020, 02:34 PM   #121
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I ended up taking the vehicle to a local mechanic shop and they determined it was a bad relay. They changed it and put a new one in and it's working fine now. Where is the location of the low beam relay?

I used d2r because that is what the HID housing said to use. I also have a relay harness setup...https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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Old 12-29-2020, 10:49 PM   #122
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Quick question...Has anybody tried substituting the H4 male plug with a 9006 male plug to the 4 prong connector?...I'm finding that the cheap H4 relay harness is about to die on me and keeps flickering when I hit a bump on the road after about 3 years of use and I can't seem to find a quality H4 relay harness in the market. Morimoto makes a 9006 relay harness but will require a 9006 plug, so that is why I am asking this question. Thanks
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