I'm having trouble with my 89. The headlights and radio stopped working then started working at one point then stopped again, I've checked all the fuses and they are good, I do have turn signals, break lights, but no running lights
Headlights and radio trouble
- Thread starter Chad4448
- Start date
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Yo Chad,
Welcome!
These wiring diagrams include the headlight switch:
http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=21135
Includes instrument illumination, Courtesy lamps,betc.
Radio @ http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=21148
Headlight Switch Fires, Part Number SW-2103: "...Over the past two years, this office has experienced fires caused by another potential problem in Ford vehicles. The problem exists within the dimmer portion of the headlight switch in Ford vehicles. The light switch involved is a Model SW-2103. These are the pull out type headlight switches usually located in the lower left corner of the front dash of Ford vehicles. The headlight portion of the switch has two pullout positions, the first for parking lights only, and fully out for headlights and parking lights. The shaft of this pull-out light switch can be turned clockwise and counterclockwise which activates a dimmer switch, lowering and raising the intensity of the lighting in the instrument panels respectively. Fully rotating the shaft counterclockwise past a notch activates the interior lights within the vehicles. The potential problem exists within the dimmer portion of this switch. The dimmer mechanism consists of a metallic resistive coil set inside a ceramic disc positioned over the shaft of the switch. The coil is exposed on its front side away from the passenger compartment. The front side of the coil passes across a contact permitting a current to flow through a certain portion of the coil when the switch is pulled our in its first or second positions. The greater amount of coil through which the current is permitted to pass (clockwise most position) creates the greatest resistance and therefore dims the dash lighting to its lowest intensity. The opposite position provides greatest intensity. Through our investigations, we have found that the coil can fail owing to wear and/or possible material defects or damage. A fractured coil can maneuver itself free of the ceramic disc permitting it to come in contact with the metal bracket which mounts and grounds the switch to the vehicle. When this occurs, a current can flow through a portion of the coil creating high temperatures melting the metal material of the coil and possibly igniting surrounding combustibles. This mechanism has been observed in three separate incidents by this office. Two of these resulted in a fire. The mechanism is precipitated by wear and/or defect in the coil mechanism. If the former is true, we expect there will be an increase in fires caused through this mechanism given an increase in service time. To this date the problem appears to be somewhat limited. However, this particular light switch has been utilized in numerous Ford vehicles. Therefore, a small increase in failure rate owing to age and wear could result in a significant increase in fire losses. The SW-2103 Light Switch Assembly discussed above is reportedly installed in the following Ford vehicles: 1986 -1997 F100, F150, F300; 1990-1994 Explorer; 1987-1994 Ranger; 1987-1990 Bronco II; 1992-1997 Aerostar..."
Miesk5 NOTE: No Bronco Listed, but this may be the result of typos or incomplete research by the company. Also inspect switch connector and wires into connector.
please fill out Signature with year, engine/tranny/Xfer case/hub type info & major mods such as a Lift, etc. for better responses.
Click your name in right black panel in upper right;
In pop up,
Click, My Profile
Click, Edit My Profile in right side black panel
In left panel, Click, Edit Signature
Enter info
Click, Save Changes
Oour sponsor, Jeff at the Bronco Graveyard has offered a 2% discount to members of The BroncoZone for on line orders. To get your discount, enter the discount code BZMEMBER. Also you must include your BroncoZone User Name with the order.
Jeff's Bronco Graveyard has many parts, diagrams, etc.
http://broncograveyard.com
GL!
Welcome!
These wiring diagrams include the headlight switch:
http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=21135
Includes instrument illumination, Courtesy lamps,betc.
Radio @ http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=21148
Headlight Switch Fires, Part Number SW-2103: "...Over the past two years, this office has experienced fires caused by another potential problem in Ford vehicles. The problem exists within the dimmer portion of the headlight switch in Ford vehicles. The light switch involved is a Model SW-2103. These are the pull out type headlight switches usually located in the lower left corner of the front dash of Ford vehicles. The headlight portion of the switch has two pullout positions, the first for parking lights only, and fully out for headlights and parking lights. The shaft of this pull-out light switch can be turned clockwise and counterclockwise which activates a dimmer switch, lowering and raising the intensity of the lighting in the instrument panels respectively. Fully rotating the shaft counterclockwise past a notch activates the interior lights within the vehicles. The potential problem exists within the dimmer portion of this switch. The dimmer mechanism consists of a metallic resistive coil set inside a ceramic disc positioned over the shaft of the switch. The coil is exposed on its front side away from the passenger compartment. The front side of the coil passes across a contact permitting a current to flow through a certain portion of the coil when the switch is pulled our in its first or second positions. The greater amount of coil through which the current is permitted to pass (clockwise most position) creates the greatest resistance and therefore dims the dash lighting to its lowest intensity. The opposite position provides greatest intensity. Through our investigations, we have found that the coil can fail owing to wear and/or possible material defects or damage. A fractured coil can maneuver itself free of the ceramic disc permitting it to come in contact with the metal bracket which mounts and grounds the switch to the vehicle. When this occurs, a current can flow through a portion of the coil creating high temperatures melting the metal material of the coil and possibly igniting surrounding combustibles. This mechanism has been observed in three separate incidents by this office. Two of these resulted in a fire. The mechanism is precipitated by wear and/or defect in the coil mechanism. If the former is true, we expect there will be an increase in fires caused through this mechanism given an increase in service time. To this date the problem appears to be somewhat limited. However, this particular light switch has been utilized in numerous Ford vehicles. Therefore, a small increase in failure rate owing to age and wear could result in a significant increase in fire losses. The SW-2103 Light Switch Assembly discussed above is reportedly installed in the following Ford vehicles: 1986 -1997 F100, F150, F300; 1990-1994 Explorer; 1987-1994 Ranger; 1987-1990 Bronco II; 1992-1997 Aerostar..."
Miesk5 NOTE: No Bronco Listed, but this may be the result of typos or incomplete research by the company. Also inspect switch connector and wires into connector.
please fill out Signature with year, engine/tranny/Xfer case/hub type info & major mods such as a Lift, etc. for better responses.
Click your name in right black panel in upper right;
In pop up,
Click, My Profile
Click, Edit My Profile in right side black panel
In left panel, Click, Edit Signature
Enter info
Click, Save Changes
Oour sponsor, Jeff at the Bronco Graveyard has offered a 2% discount to members of The BroncoZone for on line orders. To get your discount, enter the discount code BZMEMBER. Also you must include your BroncoZone User Name with the order.
Jeff's Bronco Graveyard has many parts, diagrams, etc.
http://broncograveyard.com
GL!
Seabronc
New member
We can't trouble shoot it for you. Get a meter, put the key in "RUN" and use the diagrams to find out where you are missing voltage.
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Wire color codes are listed on the diagram provided by Al.
>-Wire color codes are listed on the diagram provided by Al.
Last edited by a moderator:
Yo,
OK.
Headlight Wiring Diagram & Testing in 92-96; "...The only significant difference between '92-96 and '80-91 is that the MFS's DIMMER switch replaced the older beam select switch, but they perform the same function..." by Stephen @ http://www.supermotors.net/registry/media/694507
Radio, check Ground G100 @ driver side radiator support.
I have no more info other than testing the circuits.
OK.
Headlight Wiring Diagram & Testing in 92-96; "...The only significant difference between '92-96 and '80-91 is that the MFS's DIMMER switch replaced the older beam select switch, but they perform the same function..." by Stephen @ http://www.supermotors.net/registry/media/694507
Radio, check Ground G100 @ driver side radiator support.
I have no more info other than testing the circuits.
Seabronc
New member
Thanks for the follow up!
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>-
Yo,
Wow, that black and orange wire is fed by a whopping 40 amp fuse! Thanks for the feedback!
Wow, that black and orange wire is fed by a whopping 40 amp fuse! Thanks for the feedback!
