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🔧 Upgrade your ride’s lighting game with pro-grade power and precision!
The iJDMTOY High/Low Relay Wire Harness is a robust 12V DC relay system designed to convert original H4 dual-beam headlights into separated 9005/9006 high/low beams. Featuring dual 4-pin SPST relays rated for 30-40 amps and supporting up to 320 watts, it ensures safe, efficient power delivery directly from the battery. Ideal for upgrading fog lights, off-road light bars, and custom lighting setups, this harness protects your vehicle’s wiring while enabling easy, reliable control of multiple lighting devices.
| ASIN | B01M15V3HK |
| Best Sellers Rank | #263,710 in Automotive ( See Top 100 in Automotive ) #1,179 in Automotive Replacement Electrical Wiring Harnesses |
| Brand | iJDMTOY |
| Customer Reviews | 4.2 4.2 out of 5 stars (139) |
| Date First Available | September 20, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 8 ounces |
| Item model number | For Repair, Conversion, Custom Retrofit |
| Lift Type | Manual |
| Manufacturer | iJDMTOY Auto Accessories |
| Manufacturer Part Number | AA1089a |
| OEM Part Number | Years: 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020, etc |
| Package Dimensions | 9.37 x 4.06 x 0.98 inches |
| Position | Right |
| Special Features | High Beam |
| Wattage | 320 watts |
R**S
Great product
Awesome to yes if you know what you're doing
P**Z
Miata NB1 to NB2 Headlight Conversion
I did a headlight conversion from a Mazda Miata NB1 to NB2 and used this wiring harness. The NB1 Miata has a ground switching circuit, so the diode in the harness needs to be removed. Once that's done, the low beams stay on when I turn on the high beams. The indicator on the dash also works. I wouldn't say this is super amazing quality, but it gets the job done and has been working so far, so I recommend the product!
A**R
decent product but you get what you pay for
product worked as advertised but was too short so i needed to extend multiple leads which was fine and is what it is but overall its just a cheap product so dont expect too much
D**H
Works great
Does what it's supposed to do, fits right out of the box. Added bonus: Leaves low-beam on when switching to high beam... (Did not know this when purchasing so it made testing what plug was what (low/high) a bit interesting to say the least)... Note: It's fitted with four (4) 9006 plugs. So if you want to use the "official" high-beam-bulb (9005) you have to change out 2 plugs. None of the 4 plugs are marked to show what they are supposed to be (low/high). 9006 = Low beam (usually 55 W) 9005 = High beam (usually 65 W)
S**T
Well worth the money
No issues, I would start connecting the wiring hardness from the drivers side towards the battery, then once all connected then wire tie hardness in place
R**R
DIDN'T WORK FOR ME
DIDN'T WORK FOR ME
J**R
Nice
Nice and easy to install
N**L
Does the job with a tweak.
Converting my NB1 Mazda Miata to NB2 head lights. Wire lengths were perfect for this application. Had high and low beams always on until I cut diode out of the harness where it plugs into the stock head light plug. I think this is because the miata had a common voltage and switched ground, but I'm not sure. Lows stay on with high beam, but high beams cut off when switched to low. I don't seem to have a high beam indicator on my dash. I'll keep tweaking it to see if I can get that to work.
O**Z
Es fácil adaptarlo, en mi caso solo cambie el conector H4 por el 9007 que tiene mi carro, y funciona exactamente como quería (en altas se mantienen encendidos los dos) anteriormente se prendian por separado alta y baja
Trustpilot
1 month ago
3 weeks ago