wiring problem
wiring problem
i just got new headlights for my car and i need to rewire the lights. thier are 3 wires going into the old lights and three wires going into the new lights wich wires are what in my TA. i know one is a ground one is a high beam and one is a low beam but wich is wich
anyone have any ideas wich wire goes to what part of the bulb, its a 9003 h4 bulb. it has three prongs one on top and one on each side of it. im just kinda stuck cause its 25 degrees outside and my car is all apart. i need to be driving it at 4 am.
Well don't see why the wires are out of the connectors but here's how you can tell where they go on the bulb. From ground to the high and the low connector on the bulb, the resistance is the same. So, if say one lead is on the low contact and the other is moved from the ground at say .6 ohms and then the high contact and it says 1.2 ohms then you know you have the first lead on the low. Now follow what Rob (shoe) said and viola
Hope you get the gist of this.
Hope you get the gist of this.
well i wired them up so that a light comes on. i know the top part of the H4 is the ground, the other ones are a mystery to me. i wored them and when i turned on the low beam they were yellowish and came on really slowly. and they aren't that bright. then i turned on the high beams they are pretty bright but nothing to write home about. so i went back to low beams and they kind of phased into the low beams and the high beam light (blue one on the dash) stayed on but was very dull
whats wrong
whats wrong
You have the ground on the wrong pin of the bulb. First, be sure the black wire goes to ground by ohming the connection to the "-" terminal of the battery.
Measure the bulbs pins not the connector of the harness but the actual pins on the bulb. Start with one lead(let's say RED) on one pin and move the other lead(Black lead) from one to the other of the other 2 pins. Then move the RED lead to another pin and repeat the process. Note the readings and be sure you are on the lowest scale of the OHM meter.
With out being able to give you a diagram, this is hard to explain. But, when you have the RED lead on the pin that should be grounded at the bulb, the reading from the other 2 pins will be equal.
Conversely, if you have the RED lead on say the LOW beam pin, the reading to the HIGH beam pin will be twice the reading you will get to the ground pin of the bulb. Once you can determine the ground pin, you're home free.
Then connect the wires like Rob said.
I thought the bulb had a dot on the back indicating one of the pins. Look on the box they came in and see if it tells you. If you threw the box out, go to an auto parts store and check theirs.
BTW why are the wires out of the connectors anyway?
Measure the bulbs pins not the connector of the harness but the actual pins on the bulb. Start with one lead(let's say RED) on one pin and move the other lead(Black lead) from one to the other of the other 2 pins. Then move the RED lead to another pin and repeat the process. Note the readings and be sure you are on the lowest scale of the OHM meter.
With out being able to give you a diagram, this is hard to explain. But, when you have the RED lead on the pin that should be grounded at the bulb, the reading from the other 2 pins will be equal.
Conversely, if you have the RED lead on say the LOW beam pin, the reading to the HIGH beam pin will be twice the reading you will get to the ground pin of the bulb. Once you can determine the ground pin, you're home free.
Then connect the wires like Rob said.
I thought the bulb had a dot on the back indicating one of the pins. Look on the box they came in and see if it tells you. If you threw the box out, go to an auto parts store and check theirs.
BTW why are the wires out of the connectors anyway?
I finally found a picture of the connector. 
Looking at the pin end of the connectors and with the latch mechanizm down. The left pin is Lt Green. The center pin is Tan and the right pin is Black.
If I was right about the ground problem you had, then the black wire was not on the right.

Looking at the pin end of the connectors and with the latch mechanizm down. The left pin is Lt Green. The center pin is Tan and the right pin is Black.
If I was right about the ground problem you had, then the black wire was not on the right.
you guys explained wich wires are comming out of the car and were right about that. that isn't my problem. my problem is, the light bulb i put in the car is a different style than the one comming out of the car. they don't make a bulb that attatches to the Trans am wiring hanress. thats why i got rid of that harness. i put an H4 bulb in its place with a sealed beam to composite conversion kit. and i don't know wich wire corrisponds to wich prong on the end of the bulb.
i wrote an email to piaa and they told me what was what. thank you everyone for your help. ill get some pictures as soon as possible
o ya the light are friggin bright like you would not believe. i am so \glad i spent 2 nights in the freezing weether to do this.
o ya the light are friggin bright like you would not believe. i am so \glad i spent 2 nights in the freezing weether to do this.
Thread
Thread Starter
Forum
Replies
Last Post
dbusch22
Forced Induction
6
Oct 31, 2016 11:09 AM
Magenta_Hearts
New Member Introduction
4
Mar 25, 2015 10:24 AM



