Amp draw

Cody Ray · 04-28-2012, 02:52 AM

What is the amp draw for low/high beam on a 2001 xlt ranger? Both my low and high beams seem to be quite dim and before I go hooking up my multi meter wanna know if it is above 10amps. The bulbs are brand new.

martin · 04-28-2012, 04:35 AM

I=P/V. The wattage is written on the bulbs, you can measure your voltage with your multimeter.

**4x4junkie** · 04-28-2012, 09:30 PM

#9007 DOT headlight bulbs IIRC have a 55W low beam, and a 65W high beam. ×2, that's right about 11 amps for your hi beams (it'll be higher still with the engine running).

Cody Ray · 04-29-2012, 02:13 AM

Quote:

Originally Posted by martin

I=P/V. The wattage is written on the bulbs, you can measure your voltage with your multimeter.

That occurred to me while I was typing, but I wanted a base amperage to compare my readings to.

**AllanD** · 05-03-2012, 12:48 PM

Generally the problem is a dirty/corroded connection *Somewhere* (your guess is as good as mine) that reduces voltage at the bulb.

Do remember that the resistance can also be on the ground side.

If the bulbs are silvery/black looking simply replace them, even halogen bulbs only have a RATED service life of something like 1500hours.

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04-28-2012, 02:52 AM	#1
Cody Ray Member Join Date: Jul 2010 Location: Phoenix Posts: 150 Rep Power: 6 iTrader: (0)	Amp draw What is the amp draw for low/high beam on a 2001 xlt ranger? Both my low and high beams seem to be quite dim and before I go hooking up my multi meter wanna know if it is above 10amps. The bulbs are brand new.
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04-28-2012, 04:35 AM	#2
martin Member Join Date: Aug 2007 Location: St Bruno, Quebec Year: 1984 1991 Make: ford Model: b2 explorer Posts: 2,775 Rep Power: 20 iTrader: (0)	I=P/V. The wattage is written on the bulbs, you can measure your voltage with your multimeter.
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04-28-2012, 09:30 PM	#3
4x4junkie Mall-Rated Join Date: Aug 2001 Location: So. Calif (SFV) Year: 1990,1994 Make: Ford Model: Bronco II, Ranger Engine: 2.9L, 4.0L Used For: Crawling over things Posts: 7,998 Rep Power: 10 iTrader: (0)	#9007 DOT headlight bulbs IIRC have a 55W low beam, and a 65W high beam. ×2, that's right about 11 amps for your hi beams (it'll be higher still with the engine running). __________________ '90 Bronco II XLT 5" lift (Skyjacker Jeep coils), D35 & 8.8" w/5.13s (locked), 1354 dual T-case, 35x12.50s '94 Ranger XLT 6" Skyjacker, ARB D44 front, Detroit 8.8" rear, Atlas 4.3, 33s
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05-03-2012, 12:48 PM	#5
AllanD RBV Technical Advisor Join Date: Jun 2001 Location: East-Central Pennsylvania Year: 1987... sorta Make: Ford Model: Ranger Supercab Engine: '93 4.0 Class: 4x4 Used For: Roadtrip Warrior Posts: 7,168 Rep Power: 47 iTrader: (18)	Generally the problem is a dirty/corroded connection Somewhere (your guess is as good as mine) that reduces voltage at the bulb. Do remember that the resistance can also be on the ground side. If the bulbs are silvery/black looking simply replace them, even halogen bulbs only have a RATED service life of something like 1500hours. AD __________________ Gun Control - A theory espoused by some monumentally stupid people; who claim to believe, against all logic and common sense, that a violent predator who ignores the laws prohibiting them from robbing, raping, kidnapping, torturing and killing their fellow human beings will obey a law telling them that they cannot own a gun. Last edited by AllanD; 05-13-2012 at 10:24 AM. Reason: typo
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