Headlight Problem, Please help

honda1997HB · Nov 8th, 2006, 05:15 PM

I just got a 1991 nissan pathfinder. when i turn on the switch to turn the headlight's on, they do not go on. if i turn it on one click the parking light and all the dash and everything works, but if you try turning it one more click for the headlight to come on, they dont. i just tryed replacing that whole switch and it still does the same thing. any help please?? thanx a lot

golfer · Nov 8th, 2006, 09:35 PM

This may be a silly question... are the lamps good??

If the lamps are good then meter the wires from the socket back.

Tip: don't use the chassis ground because if it's a bad ground wire you wouldn't be able to tell... it'll just confuse you.

It could be the head light relay which may be under the hood ( if I recall )

good luck.

honda1997HB · Nov 9th, 2006, 04:53 AM

yes i know that the headlights are good, lol. i changed them as well, i ment to say that b4 well thanx for the help i will give that a shot and ope for the best!!!!!

mann777 · Nov 12th, 2006, 10:16 PM

check out the RH / LH relay terminals 1 - 3 located in the fuse and fusible link box. Also have a check on the fuse 15a & 7.5A in the junction box. And run thru the body grounding of the terminals ( E13 & E41 ) whether they are done properly for the headlamps. Normally the combination switch for the headlamps has a whole gamut of connections to operate induvidually on the high and low beams control. cheers

KLL · Nov 13th, 2006, 03:16 AM

yes,one emust check relays and fuses first

honda1997HB · Nov 15th, 2006, 08:11 AM

thanx everyone for the help, i called up nissan and they told me that it wont be the relay because that parking lights fun off the same one, and they are working but you guys are making it seem like they are different ones for each side and what not, i will try and look at them anyways, and hope for the best thanx everyone for the help!!!!!!!!!!!!

honda1997HB · Nov 15th, 2006, 08:15 AM

i am sorry but if you guys can give me more of an idea on where all of the fuse are that would be great and or any pictures to help me out please?? thanx a lot!!!!!

KLL · Nov 23rd, 2006, 03:21 PM

some of them must be under hood close to fenders and others must be under dash... ( i have no exact idea about your car model)

knowitallnissan · Nov 25th, 2006, 10:33 PM

the fuses are located beside the battery in the relay fuse box should be labeled left head lamp right head lamp. Don't understand why all 4 lamps are out high and low wiring problem or bad switch is a good possibility

**88pathoffroad** · Nov 27th, 2006, 09:21 PM

Oh, and there is no relay for the headlights, high or low. Just so you know.

golfer · Nov 28th, 2006, 08:23 AM

Quote:

Originally Posted by honda1997HB

I just got a 1991 nissan pathfinder. when i turn on the switch to turn the headlight's on, they do not go on. if i turn it on one click the parking light and all the dash and everything works, but if you try turning it one more click for the headlight to come on, they dont. i just tryed replacing that whole switch and it still does the same thing. any help please?? thanx a lot

Now you aren't clear if the high beams work or not... which I'm guessing they're not.

Also were there any modifications done ... fog lights added ??

If both the low and high lamps are not working and you're sure the switch is 100% and the two 15 amp fuses are good , likely its the black ground lines common to both is the problem.

If the highs work and it's just the low, check the R/B wire ( right ) and R/G wire ( left ) for power.

The power routing is :

- W/R wire is battery supply to two 15 amp fuses at fuse block

- R and R/W wires from the two fuses go to the light switch
...hopefully the colors haven't changed...

With your vintage there are no relays for the headlamps , the L/H and R/H relays were introduced on later versions.

mann777 · Nov 29th, 2006, 10:27 PM

I guess i missed this part " With your vintage there are no relays for the headlamps , the L/H and R/H relays were introduced on later versions." U r right buddy, this are for later models. According to my belief, the wiring system is very simple and straightforward once the wiring diagram and the color codes are available. The rotary light switch plays the role of a hub to the electrical system . I guess u need to recheck the terminals of the rotary switch and its entirety.