posted 26 October, 2003 03:57 PM
Okay, I have a 2002 TA. The license plate light isn't working, and no, it's not the bulb. I put a voltmeter on both ends of the socket, and each side to chassis ground has 12 volts. What's going on here? I followed the wires back to a plug. The plug had only 12 volts on one side and each side marker light, which is in the same circuit, work fine. If this is a short to ground, putting power on both wires, wouldn't it blow a fuse? Do light sockets go bad?
Posts: 2 | From: - | Registered: Oct 2003
| IP: Logged
-------------------- SLP OEM air-lid (painted) with Donaldson filter and CAI, GMMG Chambered exhaust,GMS 200 MPH white gauges,3.73 Rear Axle, SS grille with silver logo, 5-Spoke ZR-1 Chrome Plated Wheels, SS Front Floor Mats, Commemorative Portfolio, Custom FRC's, D Goetz signature series SFC's and STB, Gentex Mirror, Power antenna,T/A shifter handle,clear corners, 160 Therm., HPP3 and Silver SS emblems with 345 hp decals painted calipers with Camaro decal car # 10252 41U Onyx Black -1 of 174 A4 verts
posted 27 October, 2003 06:54 AM
If the bulb is a known good bulb and there is 12v present at the bulb sockey,sounds like there is no ground at the socket.If there is only one wire coming to the socket,then the socket will ground where it mounts.
-------------------- Current ride is: 2002 Brickyard 400 35th Anniversary LE convertible #22,SLP build# 0036,35th Anniversary Build #47 EMCC Member #234 www.emcamaro.org WCA Member #197582 MMCC Member #28 NEOCC Member #634 Posts: 5682 | From: Dearborn,Mi. | Registered: Feb 2002
| IP: Logged
posted 27 October, 2003 01:09 PM
There is a splice in your ground side wire where the two marker lights and the plate lamp come together. I would check into that splice or the socket itself if the markers are working fine. It could be that the splice has come apart but not sure why you are showing 12V on both sides. Would need to know how you exactly measured the voltage.
Posts: 52 | From: Michigan | Registered: Sep 2003
| IP: Logged
quote:Originally posted by ws6wu6: There is a splice in your ground side wire where the two marker lights and the plate lamp come together. I would check into that splice or the socket itself if the markers are working fine. It could be that the splice has come apart but not sure why you are showing 12V on both sides. Would need to know how you exactly measured the voltage.
If the bulb was in the socket and no ground was present,there would be 12v on each side.
-------------------- Current ride is: 2002 Brickyard 400 35th Anniversary LE convertible #22,SLP build# 0036,35th Anniversary Build #47 EMCC Member #234 www.emcamaro.org WCA Member #197582 MMCC Member #28 NEOCC Member #634 Posts: 5682 | From: Dearborn,Mi. | Registered: Feb 2002
| IP: Logged
posted 30 October, 2003 12:33 PM
Good point Greg that is exactly why I mentioned that we would need to know how he measured the voltage. I wonder if he got it fixed or not.
Posts: 52 | From: Michigan | Registered: Sep 2003
| IP: Logged
posted 30 October, 2003 04:19 PM
Thanks for the replies. I took out the good bulb, and with a voltage meter, I stuck the probe into one terminal of the socket, and the other probe to my exhaust system (ground). It measured 12 volts. I then did the same to the other terminal in the socket, and it too measured 12 volts. Am I seeing 12 volts in the ground circuit from the other 2 marker lights? I think I'll remove the other 2 marker light bulbs, and then see if I still have 12 volts in the ground. The socket has 2 wires, brown and black I think, which also go to the other 2 marker lights. I'm thinking if the splices were bad, one of the side marker lights wouldn't work also.
quote:Originally posted by jcot: Thanks for the replies. I took out the good bulb, and with a voltage meter, I stuck the probe into one terminal of the socket, and the other probe to my exhaust system (ground). It measured 12 volts. I then did the same to the other terminal in the socket, and it too measured 12 volts. Am I seeing 12 volts in the ground circuit from the other 2 marker lights? I think I'll remove the other 2 marker light bulbs, and then see if I still have 12 volts in the ground. The socket has 2 wires, brown and black I think, which also go to the other 2 marker lights. I'm thinking if the splices were bad, one of the side marker lights wouldn't work also.
The brown wire is the 12v feed from the tailight fuse.The black wire is the ground.If you took the bulb out and there was 12v on the ground,that voltage is probably comming from one of the other bulbs in the circuit.
-------------------- Current ride is: 2002 Brickyard 400 35th Anniversary LE convertible #22,SLP build# 0036,35th Anniversary Build #47 EMCC Member #234 www.emcamaro.org WCA Member #197582 MMCC Member #28 NEOCC Member #634 Posts: 5682 | From: Dearborn,Mi. | Registered: Feb 2002
| IP: Logged
Printer-friendly view of this topic
![[Smile]](smile.gif)
