Low Beams Dont work!?!?!

Kai · 06-02-2006, 09:59 AM

The H4 bulb used in the headlamps contains two filaments - one for the low beam, one for the main beams. Thats why there are three wires going to it - one common ground, and two positives

MK3_300 · 06-02-2006, 06:52 PM

I'm sorry, I may have missed it but did you say you've done a (replaceable bulb) H4 conversion? If so then yes you can replace just the bulb, but if not you may still have the OEM style sealed headlights. In that case you will have to replace the entire lens/housing assembly. You can get them anywhere that sells auto headlights. Either style you have, I would recommend replacing them with Silvanya(sp?) Silverstar headlights....much better lighting for only a little more cost.

Also my drivers side high beam dosen't work but my problem was that the high beam positive wire had broke off from the connector. You might want to check your harness wires when you take the headlights out.

supfoo514 · 06-04-2006, 01:41 AM

Yea...I pretty much have to drive around with my high beams on all the time because I don't want to get pulled over....but I do want to fix my low beams. So if I still have the stock housing then I will need to change the whole thing? As opposed to just changing the bulb if I had an aftermarket housing? Thanks.

damdog05 · 06-04-2006, 02:06 AM

correct. if you havent converted then you have to replace the whole thing. its easy though, just four screws and they come out. and seriously, go for the silverstars, they are sooo much better and theyre not that expensive.

Kai · 06-04-2006, 01:52 PM

IIRC, all UKDM models had to have replaceable bulbs due for regulatory reasons. It might be the same for most of Europe too, but dont quote me on that.

06-02-2006, 09:59 AM	#1
Kai 3" Exhaust Join Date: Mar 2006 Location: London Posts: 69	The H4 bulb used in the headlamps contains two filaments - one for the low beam, one for the main beams. Thats why there are three wires going to it - one common ground, and two positives __________________

06-04-2006, 01:41 AM	#3
supfoo514 Intake Join Date: Mar 2006 Location: San Francisco Posts: 41	Yea...I pretty much have to drive around with my high beams on all the time because I don't want to get pulled over....but I do want to fix my low beams. So if I still have the stock housing then I will need to change the whole thing? As opposed to just changing the bulb if I had an aftermarket housing? Thanks. __________________ 91 Turbo Automatic MKIII a.k.a "Sammie"

06-04-2006, 02:06 AM	#4
damdog05 12psi boost Join Date: Apr 2006 Location: Georgia Posts: 250	correct. if you havent converted then you have to replace the whole thing. its easy though, just four screws and they come out. and seriously, go for the silverstars, they are sooo much better and theyre not that expensive. __________________ My cars: 85 Trans Am- Ehhh- Gone 83 Rx7- Much Better- Gone 86.5 Supra- Love- Not Gone

06-04-2006, 01:52 PM	#5
Kai 3" Exhaust Join Date: Mar 2006 Location: London Posts: 69	IIRC, all UKDM models had to have replaceable bulbs due for regulatory reasons. It might be the same for most of Europe too, but dont quote me on that. __________________

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06-02-2006, 06:52 PM	#2
MK3_300 Stock Join Date: May 2006 Location: Murfreesboro, TN Posts: 5	I'm sorry, I may have missed it but did you say you've done a (replaceable bulb) H4 conversion? If so then yes you can replace just the bulb, but if not you may still have the OEM style sealed headlights. In that case you will have to replace the entire lens/housing assembly. You can get them anywhere that sells auto headlights. Either style you have, I would recommend replacing them with Silvanya(sp?) Silverstar headlights....much better lighting for only a little more cost. Also my drivers side high beam dosen't work but my problem was that the high beam positive wire had broke off from the connector. You might want to check your harness wires when you take the headlights out.