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Joined: Nov 2002
Posts: 21
M
New Guy
New Guy
M Offline
Joined: Nov 2002
Posts: 21
I am in the process of rewiring my 57 3100. I put in the new harness and today I installed the new headlight switch. When I hook up the wires, and before I mounted it to the dash, the dash lights work fine with the key in ON or START position, but the dome light does not....when I mount the switch to the dash, the dome light works fine, but now the dash lights are on even when the key is in the off position...Do I have a grounding problem? Any pointers on how to fix this situation? If I leave it as it is, it will drain the battery....Thanks Mike :confused: :confused:

Joined: Feb 2002
Posts: 12,029
F
Cruising in the Passing Lane
Cruising in the Passing Lane
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Joined: Feb 2002
Posts: 12,029
might be a ground problem - sounds like you may have some wires on the switch wrong - do you have a wiring diagram?

the dome light should get it's power and ground thru the switch, the dash lights get power only from the switch - the wires to both are gray, w/ the dome light being a lighter gauge - maybe you have the 2 wires switched around?

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics
Joined: Nov 2002
Posts: 21
M
New Guy
New Guy
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Joined: Nov 2002
Posts: 21
Thanks Bill....I do have a wiring diagram and will double check the wiring again tomorrow...

Joined: Jul 2004
Posts: 39
T
Junior Member
Junior Member
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Joined: Jul 2004
Posts: 39
Lights should work without the key being on, unless you wired it work that way.


Paul

When you do a good deed, get a receipt just incase HEAVEN is
like....the IRS
Joined: Nov 2002
Posts: 21
M
New Guy
New Guy
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Joined: Nov 2002
Posts: 21
Paul, agree they should work when the light switch is in the out (ie headlights on) even if the key is off, but mine are on all the time.....unless I turn the knob to the left to turn everything off....I'm going to recheck my wiring today.....

Thanks, Mike

Joined: Apr 2002
Posts: 1,571
G
Shop Shark
Shop Shark
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Joined: Apr 2002
Posts: 1,571
New headlight switch...as in repop? If so, throw that POS in the nearest lake and get a good used one. They're available from anyone who sells any used parts.


Get a REAL truck, get a GMC! www.oldgmctrucks.com
1954 GMC De Luxe COE
Joined: Nov 2002
Posts: 21
M
New Guy
New Guy
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Joined: Nov 2002
Posts: 21
Thanks for the help guys...got it working...very simple....the new knob was too far on the stick, and was preventing the switch from closing when installed..I took the know off, pushed the stick all the way in, reset the knob and now it works fine...except for blowing a fuse when I forgot to turn the key off when I installed it!!!

Appreciate the help!!

Joined: Jul 2004
Posts: 5,708
A
'Bolter
'Bolter
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Joined: Jul 2004
Posts: 5,708
mserges,

Isn't it weird how a problem goes from clueless to simple in the blink of an eye! smile


Stuart


Moderated by  Jon G, Rusty Rod 

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