Engine idle speed lowers when headlights are on

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Oct 21, 2010 | 05:54 PM

Skinamer

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Engine idle speed lowers when headlights are on

Is this normal or could I have an alternator or battery on its way out?

Oct 21, 2010 | 06:18 PM

xxxtreme22r

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From: Wilkes-Barre, PA, USA

I'd say it's normal for a 15-20+ year old truck, however something like the "Big 3" upgrade helps. That's all I will say, it's up to you to figure out what the "Big 3" means.

Oct 21, 2010 | 08:03 PM

Skinamer

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ok I looked up the "Big 3". Saw too much info that didn't match up. What size wire is best? Where is the engine to chasis ground on a 22RE?

Nov 18, 2010 | 12:02 AM

ChzSoda

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From: NorCal

I just did the Big3 (or most of it, until I have more time to finish) and I went with 4ga. The ring terminals for that size fit everywhere, and it's quite a bit larger than stock.