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Electrical Discussion of preventative/corrective maintenance and other technical issues regarding your coach's electrical system.

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  #1  
Old 11-20-2011
Wsufans Wsufans is offline
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Default No Tail lights, No Dash Lights

New to us PT40. We have front "yellow" running lights but no rear red tail lights and no dash gauge lights. Could the problem be the light switch itself? Any suggestions on method to diagnose this? BTW the blue outlines on the dash work but only when the dimmer is turned to the max.
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Old 11-21-2011
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Had the same problem with our 83 FC. It was the light switch. Common switch. Think it was like a 70s GM.
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Old 11-21-2011
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Randy Dupree Randy Dupree is offline
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As Rick says,the head light switch is a weak spot,do a search on headlight relays.
Also,some Bird owners were old truckers,someone may have put a separate switch in so theu could flash the lights,trucker style.
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Old 11-21-2011
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"Good Buddy" switch Randy.
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Old 11-21-2011
bubblerboy64 bubblerboy64 is offline
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Are you towing? I've had all manor of trouble with my lights and it's related (in my case) to the draw of current thru the system when towing. I've had trouble with the head light switch burning out and also issues with the relays. My lights would come on and off and if that's what happens you can be sure it's a current draw issue. Things would work for a while then not and it can be a bit maddening especially when you know nothing about automotive electronics. Shane and KC both have working with me on lights and there are solutions. If you don't have dash lights you can bet your tail lights (running lights) are not on.
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Old 11-21-2011
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Quote:
Originally Posted by Wsufans View Post
New to us PT40. We have front "yellow" running lights but no rear red tail lights and no dash gauge lights. Could the problem be the light switch itself? Any suggestions on method to diagnose this? BTW the blue outlines on the dash work but only when the dimmer is turned to the max.
May or may not be light switch. Check forum - light issues. much info on this problem encountered by John Heckman & KC. also soultions. PM me if I can be of any help.
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  #7  
Old 11-21-2011
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GreenBird GreenBird is offline
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Our dashboard gauge lights don't work but everything else does. I'm thinking light switch but haven't checked it out. Good buddy switch might be an idea - I usually just toggle the turn signals.
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  #8  
Old 11-21-2011
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rselin rselin is offline
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Quote:
Originally Posted by Randy Dupree View Post
As Rick says,the head light switch is a weak spot,do a search on headlight relays.
Also,some Bird owners were old truckers,someone may have put a separate switch in so theu could flash the lights,trucker style.
My SP had a switch for flashing the tail lights when I bought it, added by a PO. It was a maintained contact on/off toggle switch that he threw in under the dash on the right side. I thought it was dangerous to wire it that way because if it was accidentally left in the off position, I would have no taillights. I removed it.

I think if anyone wants to do this it would be better to wire in a momentary contact switch with spring return so the taillights are off only as long as the switch button is held in. This is how BB arranged the clearance light switch on my SP. It has a momentary spring return position to flash the clearance lights.
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Last edited by rselin; 11-21-2011 at 11:15 PM. Reason: Edited for clarity
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Old 11-21-2011
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Strange mine SP only flashes the clearance lights. Tail light circuit is on the headlight/parking light switch.
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  #10  
Old 11-21-2011
Don Meyer Don Meyer is offline
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Almost every vehicle I've ever owned had a common fuse for the tail lights and dash lights. This was a safety feature to alert the driver that if the tail lights were out the dash lights lights were out also. Don't know if BB did this in your year coach. But it's worth looking into.
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