1990 Ford F-250 no parking lights or dash lights

Tiny
WILDCATKLD
  • MEMBER
  • 1990 FORD F-250
  • 112,000 MILES
The fuse for the parking lights keeps blowing out.
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Monday, February 27th, 2012 AT 12:59 PM

8 Replies

Tiny
KHLOW2008
  • EXPERT
There must be a short somewhere. Check for bad bulbs, sockets, crimped wires and impact damages.
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Monday, February 27th, 2012 AT 1:18 PM
Tiny
WILDCATKLD
  • MEMBER
I checked the wires running down the rail all the way to the trailer light hitch, light bulbs. I was wondering if it could have something to do with the headlight switch itself and if so how do I test it.
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Monday, February 27th, 2012 AT 1:24 PM
Tiny
KHLOW2008
  • EXPERT
The headlight switch should not be the cause of the fuse blowing. Does the fuse blow immediately upon turning on the switch?
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+1
Monday, February 27th, 2012 AT 1:27 PM
Tiny
WILDCATKLD
  • MEMBER
Yes. I've had some strange electrical problems lately such as not starting, I unhooked the negitive battery cable for a couple of minutes and haven't had that problem since. But the seatbelt warning buzzer works only once in a while and the light for the face of my stereo (stock) comes and goes. I bought the truck about 6 months ago and have not been able to get the back up lights to work. Could all these problems be connected.A bad common ground?
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Monday, February 27th, 2012 AT 1:33 PM
Tiny
KHLOW2008
  • EXPERT
It is possible but could be more than one problem and might take some time to solve all. The back up lights uses a direct power supply from the ignition to the switch and then the back up light bulbs and ground.

Start by checking for battery voltage to the switch, is this an automatic or manual transmission vehicle?

For the radio, remove the radio and check the connectors and ground circuit. That could be related to the seat belt buzzer, but then the seat belt buzzer could be due to a fault with the seat buckle switch.

For the taillights, remove all bulbs related to the system for the exteriors and turn on the lights to test if the fuse still blowa.
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Monday, February 27th, 2012 AT 3:29 PM
Tiny
WILDCATKLD
  • MEMBER
It's an automatic, with testing the taillights, if the fuse still blows would that indicate that it's either the dash lights or the glove box light thats the problem since they are on the same fuse?
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Monday, February 27th, 2012 AT 4:02 PM
Tiny
KHLOW2008
  • EXPERT
That could be. It could also be due to a short with the radio wiring as it has a illumination light circuit there.
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Monday, February 27th, 2012 AT 5:10 PM
Tiny
WILDCATKLD
  • MEMBER
Ok thanxs for all your help. I'll do some testing and let you know how it turns out.
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Monday, February 27th, 2012 AT 5:50 PM

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