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95.5-2004 Tacomas & 96-2002 4Runners 4th gen pickups and 3rd gen 4Runners

Electrical problems?

Old 10-31-2018, 03:35 PM
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Electrical problems?

I have a 99 4runner sr5 sport 4wd. I’ve had it about a year now and ever since I got it it’s done this. When I have the headlights on and pull 2 window switches at a time the headlights dim. As soon as I let off the switches the headlights go back to normal. I knew the truck would need some work when I bought it, and now I’m getting around to it.

so my question is: Is this a known issue? Is there a fix for it or is it just something that happens. There are no other electrical issues with the truck. Thanks
Old 10-31-2018, 04:07 PM
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Not a known issue.
Make sure battery connections are clean as well as all grounds.
Use sand paper or emory cloth.
Old 11-03-2018, 06:02 PM
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Originally Posted by NorthCalifT4R
I have a 99 4runner sr5 sport 4wd. I’ve had it about a year now and ever since I got it it’s done this. When I have the headlights on and pull 2 window switches at a time the headlights dim. As soon as I let off the switches the headlights go back to normal. I knew the truck would need some work when I bought it, and now I’m getting around to it.

so my question is: Is this a known issue? Is there a fix for it or is it just something that happens. There are no other electrical issues with the truck. Thanks
Is that with engine on or off? If off, what happens with it on and vice-versa?
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