 Electrical Idiot Needs Help- Headlight Problem |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
  |
| tornik550 |
 Mar 17 2009, 06:31 PM
Post
#1
|
|
Senior Member  Group: Members Posts: 1,248 Joined: 29-January 07 From: Ohio Member No.: 7,486 Region Association: None  |
I am an absolute electrical idiot. I recently rebuilt my engine. I also rewired the car from the firewall back. I am having a problem that I cannot figure out. For some reason, my headlights will work if the ignition key is turned however it will not work if the engine is started. Other than replacing all the fuses, I did not think that I did anything that should affect the headlights. Please help!
|
   |
 
|
| ArtechnikA |
Mar 17 2009, 08:28 PM
Post
#2
|
|
rich herzog Group: Members Posts: 7,390 Joined: 4-April 03 From: Salted Roads, PA Member No.: 513 Region Association: None |
QUOTE(tornik550 @ Mar 17 2009, 08:31 PM)  ...I did not think that I did anything that should affect the headlights. Please help! my _guess_ is that you have a ground floating. When the engine (alternator...) is off your headlights are finding a ground through some weird path. When the alternator is supplying charging current, it is energizing whatever component was allowing current to flow through it previously. Are your headlights working really well, or is it just a vague glow? Highbeams and low beams both affected the same ? You may have to resort to tracing through the wiring diagram, but first, find and clean the headlight ground points really well (from the 'it couldn't hurt' file...) |
|
|
|
| 904svo |
Mar 17 2009, 09:54 PM
Post
#3
|
|
904SVO Group: Members Posts: 1,118 Joined: 17-November 05 From: Woodstock,Georgia Member No.: 5,146 |
Make sure you have the transmission ground strap installed!
|
|
|
|
| ejm |
Mar 18 2009, 04:28 AM
Post
#4
|
|
I can see the light at the end of the tunnel Group: Members Posts: 2,691 Joined: 3-February 03 From: Massachusetts Member No.: 224 Region Association: None |
Could be an ignition switch problem. The headlights get power thru the "X" contact in the switch which has power in the on postion but not while cranking. After starting try turning the switch slightly to off and see if the lights work.
|
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 16th May 2024 - 02:21 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.