Credit: ChrisMan287
Big thanks to JtzMax for helping me out on this. It should be beneficial to others who either have a quad retro or just want the low beams to stay on when they flash their highs with their non-retro’d R34’s.
I know most would prefer it that when you hit the highs, the lows stay on but with our 9004 headlight system, it’s not really an option. Usually it’s either one or the other but with diodes, the job can be accomplished.
Disclaimer:
This modification to your headlights is done at your own risk and can only be done with a R34 set up (as far as I know). I will not be held responsible for any damage that may occur.
The diode that you will need is a 1N4007 diode (1 amp, 1000 volts). From there it’s pretty simple. If you have a quad retro with a relay wiring harness, bridge one diode over the high and low terminals on the driver side harness that is used. If you don’t have a retro, bridge one diode over the high and low terminals on each original harness. You can also solder the diode(s) into the original wiring if you’d like but I didn’t go that route.
IMPORTANT: For either set up, the side of the diode(s) that has the silver stripe goes on the low beam terminal while the other side goes on the high beam terminal.
Now you’re done! Just test your lights to make sure they work properly. If the diode didn’t work, you might have installed it backwards (silver stripe on the high beam terminal instead of the low beam terminal), shorting out the diode and you’ll need a new one. You also might not have inserted it correctly so check that as well.
I really love this quick fix for R34’s (retro’d or not). They now look and perform better than before. Personally, I hooked up the wires from the high beam solenoids in my FX35’s to the J30 high beam bulbs so that when I hit the highs, those bulbs turn on and the cutoff shield in the FX35’s flip down but now my low beams stay on as well so these high beams are serious.
Headlight Setup:
- Headlights: 1pc R34 chrome housings. Custom harness with diode.
Low beam: Infiniti FX35’s with FX-R clear lenses, FX shrouds, DDM 55W ballasts and Morimoto 55W 5000K bulbs.
High beam: Infiniti J30 9005 halogen projectors with Lexus capsules and 100W yellow 9005 halogen bulbs. - Fog lights: ’95-’96 fogs, blacked out and independently rewired.
Low beam: Lexus ES300 projectors with 35W 3000K H3C HID kit.
*The only minor negative to this is that when the lows are off and you hit the highs, the lows will turn on along with the highs but it’s not a big deal.*
Enjoy!
