How to Test For Heater/Blower Wire

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=42805
Printed Date: April 27, 2024 at 3:01 PM

Topic: How to Test For Heater/Blower Wire

Posted By: newinstaller
Subject: How to Test For Heater/Blower Wire
Date Posted: November 11, 2004 at 11:07 PM

Hi,

I would like to know how to test For Heater/Blower Wire with a multi meter

I understand most but this confuses me.

Thanks

IE what would it read on the meter

Replies:

Posted By: daniel2002p
Date Posted: November 11, 2004 at 11:13 PM

it is just a acc wire in the ign column. it will be hot in the run position and neutral while starting.

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2005 Toyota Corolla S
1.8L VVT-i I-4
Always double check your wires with a DMM!!!
Do Not Use A Test Light!!!
MECP Certified Installer!
Best Buy 665 - IN IT TO WIN IT! TEAM MOBLE!

Posted By: jrilla
Date Posted: November 11, 2004 at 11:26 PM

I dont want to discourage you but your name is just begging for comments to be made abut it. What happens if you ever get good at installing? or are you pretty much planning on being as good as a newinstaller forever? posted_image

Knowing how to test for an Acc and an ugnition wire is by far the most basic knowledge that any installer should have even if it is their first time. And don't just go testing wires. Get a good wire diagram then go test the wires on it. You should test every wire you grab, unless you have done the vehicle before and know for sure.

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J Rilla

Owner/Installer

Posted By: jrilla
Date Posted: November 11, 2004 at 11:31 PM

I just wanted to mention again that I am not trying to be a jerk. I know I see some guys who get pretty blunt around here, but I have a genuine concern for people who post questions that reveal their level of expertise and the extent of their current knowledege and I fear that they might set a car on fire or burn out a computer or something that costs thousands or even a few hundred dollars. When you are a newbie even a few hundred dollars can hurt pretty bad.

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J Rilla

Owner/Installer

Posted By: gcorrea
Date Posted: November 11, 2004 at 11:36 PM

true to that, dont always take a diagram for granted always re check to see if its the true wire you are looking for. the diagram should be just a refrence point.

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gcorrea

Posted By: Teken
Date Posted: November 12, 2004 at 6:19 PM

jrilla wrote:

I know I see some guys who get pretty blunt around here,

* Looks Around, and Ducks * posted_image

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Knowledge is power. But only if you apply that knowledge in a positive way, which promotes positive results in others.

EVIL Teken . . .

Posted By: auex
Date Posted: November 12, 2004 at 6:24 PM

Hell, I better start wearing kevlar. posted_image

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Certified Security Specialist
Always check info with a digital multimeter.
I promise to be good.
Tell Darwin I sent you.

I've been sick lately, sorry I won't be on much.

Posted By: flynntech
Date Posted: November 13, 2004 at 4:08 AM

Why not understand what you are testing with the multimeter?

It must be in the voltage setting, probably 20 volts range for 12v measurements.

If it is ACC you are tesing for, then that would be the positive side of the circuit. In other words, there is only 12v + on that wire if it is measured in reference to ground.

Take some time to understand the basics of electricity that so many newbie installers are afraid of learning. After that, things get alot easier.

You should see something like 12.75 volts DC, the car battery is 12 volts at least, hence....the12volt.com

Just about everything in an automobile operates at 12 VDC