Celica Forums General Discussion General Why my M-Tec (H7) keep blowin' the fuse?!

I have them installed in my car for 3 weeks. yesterday the one at the passenger side went out. I was like , then like 1 hour later driver side!

So today I checked the fuse box. I found blew fuse... I changed it. blew again, I did it 3 times
I checked the connections, found nothing.

I decided to put back the and got no problem in the fuse box.
I put back one of the Mtec... blow the fuse! ... again ..
I put back the ... no problem.

Why is this happening??

There is a short in the electrical when you put the MTecs. When I had my old car I kept replacing the fuses, And the second I replaced it and turned on the lights POP. Check with an electrician. It cost me 150 to fix.

that sucks. my mtec keeps blowing. my drivers side fog and headlight blew twice

stick with stock, they are much better. all those bulbs do is make them look nice at night.

thats my opinion, i can't see jack with them during the night!

yeh me neither, im going on my 3rd set of fogs right now and my second set of lows + new fuses. i totally regret even dealing with theese lights. for n e 1 thinkin about mtec i suggest you go PIAA or stay stock...i am.

I've heard of people having this problem with mtecs. What about PIAA lights??

^have my PIAA for nearly a year now, doing pretty well so far...

i knew it wasnt just me...for a while i thought Ecelica was out ot get me...

i've had my Mtecs for about a year now - still shining bright.

though I bought mine from ebay, before I even new ECelica existed.

i'd most likely try out EuroDesignz (DJ Curtis ) or Piaa (XMANGT1 ) they provided great pictures of showing the difference from MTEC and the other brands.

mtecs blow, you pay for what you get (PIAA=over $100, MTEC=$50). The short is in the connector that plugs into the adapter where the bulb plug is. Clean it with break cleaner real good and no more blown fuses.


Same stuff happened to me, those damn MTECS shorted out my entire headlight system!

you also have to be careful with the lower end " hyper white " bulbs, they jack up the wattage and most of the time your stock lighting harness cant handle that, be glad you are just blowing fuses and not melting the harness, blown fuses are trying to tell you something, i would do like the others suggested, go with piaa, you pay a hell of a lot for them but you definately get what you pay for, ll those no names and cheapy ebay bulbs will cause trouble eventualy down the road, down sacrifice safety for a better look, you will pay a hell of a lot more to have the light harness' replaced than you will pay for that $100 set of piaa's , i know some companies offer thicker head light harnesses sorry i dont know any of the names, but if your bulbs are drawing more current, you should put thicker wires, so there is less resistance, easiest way to put it is, would you rather drink a milk shake with a cofee stirer, or a milk shake straw? a milke shake straw because you get a better flow, also like trying to put out a fire with a garden hose, not enough flow, you wont get positive results

seriously, just savie up for hids. they are brighter, last a lot longer, looks a lot nicer, and way worth it in the long run.

save up for HIDS!!!! ive had PIAA's for a year and both the low beams have blown...they suck

i knew it wasn't juss me... damn mtecs

this is interesting that weve been selling MTECH for the past almost 2 years now and only as recently as 4 months have people been posting issues... there has got to be something that has changed all within the past 4 months. Things were NOT like this before with this brand

Im still working off the same mtech HIGH and LOWS that were installed to my car over a year ago...

Francy, you have PM

i agree with isaac. if you can't install a decent set of bulbs, they're going to go out. i've tried tons of light bulbs. some of them i got sick of it and swap it out with something else. never had a blown light bulb yet, and i've doing light bulbs for 4 yrs. my paseo have the PIAA extreme white for 3yrs, never had a problem. until last year i decided to upgrade to the extreme force. hence, did the same thing with my celica since earlier this year. there are some factory dectives here and there, but it's only a small %. in many cases, it's the end-user installing the bulbs incorrectly...

Maybe MTEC cheanged their bulbs, and aren't making them as well anymore. Anyone know a good place to get HID's?

I have had mines for a month now and im still good to go