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1998 dodge durango

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nay319
New User

Nov 25, 2007, 11:43 PM

Post #1 of 4 (2072 views)
1998 dodge durango Sign In
I replaced the heater core, had to pull the dash apart. To the best of my knowledge everything is reconnected back the way it was before I touched it....

but now the headlight switch and power door locks are effecting the blower operation.... ie... high speed fan only works and fan turns off when headlights are turned on. when power lock is pushed fan shuts off.

Please help

Richard


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Nov 26, 2007, 3:30 AM

Post #2 of 4 (2064 views)
Re: 1998 dodge durango Sign In
Hard to say after a dashboard autopsy but I'd bet there is a common ground strap or connection causing all this,

T



DanD
Veteran / Moderator
DanD profile image

Nov 26, 2007, 3:37 AM

Post #3 of 4 (2064 views)
Re: 1998 dodge durango Sign In
Most of today’s in dash switches are now grounding switches that when turned on complete a circuit to ground, closing a relay, turning on a device. You may have missed or forgotten a main common ground connector or splice pack? A ground splice pack is a metal connector bolted to a metal dash brace. It will have a number of plug into terminals that you would use too connect the ground wire from the different components.
With this possible path too ground missing, the blower fan’s relay(s) might be finding ground through the door lock circuit or back feeding the headlight circuit?
For example a power lock switch, while at rest; most of its terminals are connected to ground. When you toggle the switch to the lock or unlock position, you’re removing one of the paths to ground that the blower motor’s relay might be using.
Go back under the dash and look for any black or black striped wire that isn’t connected too anything?

Dan.

Canadian "EH"






nay319
New User

Nov 26, 2007, 7:48 AM

Post #4 of 4 (2060 views)
Re: 1998 dodge durango Sign In
thank you I will check!





 
 
 






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