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  #1  
Old 12-31-2012, 04:21 PM
JamesDean's Avatar
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Join Date: Apr 2005
Location: NE Ohio
Posts: 5,038
So they are continuously dimming and going back to normal?

That sounds more like a power supply problem with a light problem. Something is drawing down on your electrical system and then letting go (hence the lights getting brighter)...

Or it could be a bad connection? Does the same thing happen when the car is parked and not moving but the engine is running?
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  #2  
Old 12-31-2012, 07:14 PM
420benz's Avatar
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Quote:
Originally Posted by JamesDean View Post
So they are continuously dimming and going back to normal?

That sounds more like a power supply problem with a light problem. Something is drawing down on your electrical system and then letting go (hence the lights getting brighter)...

Or it could be a bad connection? Does the same thing happen when the car is parked and not moving but the engine is running?
Yes: I pulled into the garage, engine at idle,and all of the lights dim, then back to normal.That includes dash lights.
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  #3  
Old 12-31-2012, 07:19 PM
JamesDean's Avatar
Electrical Engineer
 
Join Date: Apr 2005
Location: NE Ohio
Posts: 5,038
You should put a volt meter on the battery and see what the voltage is when it normal and when it's dim.... Does it do it with the car off? You might have the alternators voltage regulator going bad..
__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k
Reply With Quote
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