Installed led lights on my mazda bt 50 cant find low beam relay or low beam fuse all lights work except low beam

check fuses and connections --dead battery--

well some cars do not allow that at all. (old easy, NEW HARD)
for sure DRL cars, daylight running lamp.s.
or modern cars with BCM that runs all lamps
and sees lamp currents dead wrong and goes mad.
why not bend the ears of the LED lamp sellers.
or aksk Mazda for help. the design of the BCM is not documented.
on 99% of cars,it a secret.
we have no BT50 here USA, so deeper secrets.

wiki , pains.
Mazda since 2006. It is a larger version of the predecessor B-Series pickup and is not sold in the Japanese and North American markets. The second-generation Ranger has been designed by Ford Australia, with a Mazda derivative sold as the BT-50.
odd al that is. very./

are you DOWN under posting to USA /EUROPE etc on this side of the globe?
https://en.wikipedia.org/wiki/Mazda_BT-50


ask mazda, ask LED maker
hacking cars can be a long long slog
lacking spec's here.
on some cars if the heads read dead,( zero or super low current)
it assumes lamp is dead and may cycle it over and over in the blind hope the lamp wakes up.
ever drive at night and have all heads die, I have and the cycling saved my life. (even old cars had a thermal breaker that did that)
and stills does but is computer controlled now BCM
body control modules, (and by other names but is same)

This is a useful wiring diagram. I would say try swapping the relays over first and see if Low Beams now work and High Beams don't.

Other possibilities are two failed bulbs, or a broken connector. A good test meter should be able to trace this.

https://boostedmedia.net/automotive/videos/tech-videos/mx5-miata-headlight-wiring/


It does appear to be a known issue

https://www.google.com/search?q=2013+mazda+miata+no+low+beam+headlight

This suggests the combination switch

https://forum.miata.net/vb/showthread.php?t=531436

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you need to install a canbus unit on the wiring of both lights or a resistor to cross over on live and negative. lights will only work if the lighting control unit detects resistance in wiring. some led kits dont have these on the wiring.

At the power source

check the left side bulb earths and holders



cant handle the glass of the bulbs at all ..they will blow straight away
needs a tissue

if both sides didnt work ...could be the low beam relay

Some cars have the high and low beam lights on a separate fuse. There is also a relay for the lights.
Try to trace the wires to find the relay. Check all the fuses in the engine compartment.
Hope this helps.

hi try checking the relays the 1 for the low beam may be faulty

did you check low beam head light relay to make sure its working?

thare is a high beam relay and a low beam relay in the fuse box find the low beam relay and replace it. if this dont work its probabley the switch