'2007 mazda 6 2.3 manual shift Keeps blowing the fuse for the taights

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    Welcome to Motor Vehicle Maintenance & Repair! We appreciate you being here. If your taillights fuse continuously blows, there has to be a short in the wiring for the taillights. Has the vehicle been in an accident? Anything else out of the ordinary? These things don't usually just "happen". There is a reason for it. Please edit your question and provide as much information as you can about it. Dec 24, 2022 at 12:18
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    This. Had someone reverse into me in a parking lot, very gently. We got out, no visible damage, cool went our way. 8 months later a headlight went out. Turned out that gentle side press cracked the case the bulb goes in, water got in, pop. Did not know, replace bulb. Pop. So 100% on reason.
    – Chris
    Dec 24, 2022 at 15:10
  • Does it blow as soon as the lights are turned on, or is at random times?
    – HandyHowie
    Dec 26, 2022 at 10:13
  • @HandyHowie That depends on the extent of the damage. Corrosion, leaked bulbs, water shorts, etc. There're multiple factors that can affect the light once it is damaged.
    – Nelson
    May 24 at 4:45

1 Answer 1


Why does my Taillights fuse keeps blowing

The simple answer is:

"because the circuit is drawing more current than the rating on the fuse".

But I suspect that is not really your question. The reason question is WHY is the taillight circuit drawing more current than it's supposed to?

Check the following:

  1. Be sure you have the CORRECT specification bulbs in all the sockets on that circuit. Some bulbs have a greater current draw than others and using the wrong bulbs can cause this. Check your owners manual or service information for the correct bulb types.

  2. Check for wiring faults. This is especially the case if modifications, like trailer wiring, have been made. It's easy for a short circuit to develop. Also check for rodent damage. Some wires are attractive to mice and other rodents and they will chew through the wires leaving you with an easy-to-short situation.

  3. Check that there is no damage to any of the bulb sockets on the circuit. Sometimes bad connections due to corrosion can lead to hot spots which can melt parts of the bulb socket and lead to shorts.

If you don't have a multimeter, it's time to get one as you'll almost certainly need it for this job.

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