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  #1  
Old 11-07-2018
gcyeaw's Avatar
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Default headlight buzzer

Does anyone know of an electrical diagram with the headlight warning buzzer in it? Trying to troubleshoot buzzer going off when lights are off and driving.

Probably similar in both FC and PT
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Old 11-07-2018
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NH Bill NH Bill is offline
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Originally Posted by gcyeaw View Post
Does anyone know of an electrical diagram with the headlight warning buzzer in it? Trying to troubleshoot buzzer going off when lights are off and driving.

Probably similar in both FC and PT
Seem to recall that happening to me several years ago. It was a caused by a worn out Ford style solenoid located behind the driver side access panel in the front. There are two or three in there. I forget which one it was but I think it was one of two located close to each other.
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  #3  
Old 11-07-2018
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Originally Posted by gcyeaw View Post
Does anyone know of an electrical diagram with the headlight warning buzzer in it? Trying to troubleshoot buzzer going off when lights are off and driving.

Probably similar in both FC and PT
Quote:
Originally Posted by NH Bill View Post
Seem to recall that happening to me several years ago. It was a caused by a worn out Ford style solenoid located behind the driver side access panel in the front. There are two or three in there. I forget which one it was but I think it was one of two located close to each other.
Here's a link to a thread where we discussed a "mod" for the headlight warning circuit which suggests moving the headlight warning function from that 6 pole solenoid over to a Bosch relay.

https://www.wanderlodgeownersgroup.c...ad.php?t=23367
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  #4  
Old 11-08-2018
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John,
Thanks. That will do it
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  #5  
Old 11-08-2018
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John,
Thanks. That will do it
It seems like replacing the 6 pole solenoid would be the normal fix but maybe multiple complaints of intermittent headlight buzzers led Wanderlodge (or someone else) to implement the “mod”?

NH Bill could easily be right about the location of the solenoid but the drawing I looked at last night shows it in the front overhead.
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1991 40' WLWB-WTB
Body Number F095567
My Location: http://www.bbirdmaps.com/user1.cfm?user=4

1991 40' WB ...From 2008 - Present
1984 ½ PT-36 .From 2000 - 2008
1973 FC-31 .....From 1991 - 2001
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  #6  
Old 11-08-2018
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Originally Posted by Dieselbird01 View Post
It seems like replacing the 6 pole solenoid would be the normal fix but maybe multiple complaints of intermittent headlight buzzers led Wanderlodge (or someone else) to implement the “mod”?

NH Bill could easily be right about the location of the solenoid but the drawing I looked at last night shows it in the front overhead.
My memory has returned a little and now I remember changing that relay in my 86 PT for another issue. I recall the headlight buzzer wire had been disconnected.

In my opinion if one pair of contacts is gone or going bad, the other set is suspect. I would replace the relay if there is any issue with it.
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  #7  
Old 1 Week Ago
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Default Head Light Buzzer

I too had experienced the headlight warning buzzer going off after passing over reasonable bump in the road. Not every time, but it got annoying when it occurred. The solution was to run with the headlights on. It would reset to normal with an engine restart but sometimes it required resting overnight.


I rewired the system based on information posted in the forum and as shown on Attachment 1, a markup of the my overhead load centre in the owner's manual.



I took apart the canister solenoid to see what, if anything, was wrong on the inside. Attachment 2 is a photo of the insides. Interesting spatter on the N/C contacts.


By the way, the current Cole Hersee catalogue does not seem have a replacement for the OEM relay (C/H 24401), but I recently found some on Amazon. Attachment 3.


After this rewiring, the buzzer operated but was not consistent. Sometimes it would give and alarm, other times silent. Using a multimeter, I found that sometimes I had over 2.2 volts on the control feed to the new relay in the overhead centre notwithstanding the ignition key was off. This low voltage was enough to keep the relay energized thereby defeating the headlight alarm. Touching a test lamp lead to the 12V+ control wire discharged the system, voltage went to and remained at 0 volts, and the relay opened.


To me this almost seemed like a capacitor discharged.


The overhead load centre drawing indicates the control wire is fed from the lower front load center, which I opened up. Sadly, its drawing failed to identify the wire source. After a while I identified its source as CB 14. Attachment 4 is a markup of the drawing for my lower front load centre.



The canister relay in the lower front load center is energized by the ignition key and provides 12 v to the centre column of circuit breakers, thereby feeding control voltage to the relay in the overhead load centre. The wire feeding this column of breakers dropped from battery voltage to 2.2 volt when the ignition key was turned off.


By this time I got this far, the sun had set. Tools had to be put away. The quest will continue.
Attached Thumbnails
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Name:	Load Centre Overhead Good Grief Modifications.jpg
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Name:	Cole hersee relay.jpg
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Name:	Screenshot_2018-12-03 Cole Hersee 24401 Continuous Duty Solenoid, Solenoids - Amazon Canada.jpg
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Name:	Load Centre Lower Front Good Grief modification.jpg
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