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Discussion Starter #1
Noticed this problem happening lately, figured I'd see if anyone else has the same issue...

When driving out of boost, my gauge cluster and interior lights are fine. If I get on it a little, or even half throttle, they tend to go dim for a bit, then back to normal. Usually within 5 seconds. Happens in neutral also, if I rev it enough to close the bypass valve.

Anyone have any thoughts or know why this is happening?
 

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Im going to go out on a limb and say your fans are kicking on. Mine does it all the time as my fans are programmed to kick on earlier. That causes a sudden draw that the car has to play catch up to. Im sure thats what it is and wouldnt sweat it if the battery light isnt coming on. Sit at idle with the hood up and see if you can hear the fans and watch for the lights to dim. I notice mostly with my headlights dimming..
 

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not only that, but when you give it WOT, the computer cuts back on the alternator field current so there's less parasitic loss from the alternator
 

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my headlights and gauges dim too its the alternator. it only in higher rpms and higher boost. not at idle. It's normal.
 

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Make a grouding kit for your car. That should help a little on the dimming. Go get some 4 gauge sound system wiring, and gold plated ends. Look up how to install and wht the contact points are.
 

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Im not even boosted and I have the dimming light thing. Hell sometimes my dash cluster and radio lights blink completly off too.. Since early 2004. Goodluck
 
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