Hmmmm....
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Freshman User
Joined: Mar 2001
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Hmmmm....
Question. The front right turn signal on my 77 F150 4x4 won't work with the parking lights on. The turn signal works when switched on, but the parking light will not light. I replaced the bulb with one that I know works for both, and I also checked the wiring harness and saw no grounds or shorts. I think from the diagram in the book that the parking lights are in phase and the right one is the first in line. So, how is it the left one works and the right doesn't if power goes to the right one first? This may sound complicated, but I know wiring is simple. My gas gauge also doesn't work, just goes up above the "E" line and stays no matter how much gas is in it. Do i have to take the gas tank off and check out the float in there or what? The truck sat for 10 years (a lifetime over here in Hawaii) and has rust everywhere on the under carriage. Thanks for any suggestions.
Ricker
77 F150 4x4, shortbox, one gas tank.
p.s. all of you who said not to put headers on my truck and return it to stock exhaust, you were soooo right.
many bleedin knuckles
Ricker
77 F150 4x4, shortbox, one gas tank.
p.s. all of you who said not to put headers on my truck and return it to stock exhaust, you were soooo right.
many bleedin knuckles
Tuned
Joined: Apr 2001
Posts: 443
Likes: 1
From: Athens, AL
Hmmmm....
i had a similar problem with my 77....i found that the ground for the light socket was bad....check the wire going from the socket...the other end should be screwed into the radiator support...if it looks good, check the metal tab inside the socket on the side ....i had that tab rusted on one side and the other had a bad ground connection....gave me the same problems....also...the float in your tank may be flooded due to a pinhole or crack....or it could be a bad sending unit from sitting so long....easiest thing to do there is to remove the wire on the tank and ground it...if the gage reads full, then you need to pull the sending unit to find the problem....
Posting Guru
Joined: Jun 1999
Posts: 2,415
Likes: 3
From: Comox Valley, Canada
Hmmmm....
Question. The front right turn signal on my 77 F150 4x4 won't work with the parking lights on. The turn signal works when switched on, but the parking light will not light. I replaced the bulb with one that I know works for both, and I also checked the wiring harness and saw no grounds or shorts. I think from the diagram in the book that the parking lights are in phase and the right one is the first in line. So, how is it the left one works and the right doesn't if power goes to the right one first?
The power may look like it goes to the right light first, but it is actually a parellel circuit. Which means that even though the right bulb is burnt out or even the right wire is cut there still is power avaliable to the other parking lights.
Good luck.
Sparky
Posting Guru
Joined: Jun 1999
Posts: 2,415
Likes: 3
From: Comox Valley, Canada
Hmmmm....
thanks, sparky, for reiterating what i already said....
I have learned that some people like to see things a couple of times before they beleive them. Besides the ink I use for these posts is free Sparky
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Freshman User
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Hmmmm....
Thanks sparky and everyone else. I read your message and immediately checked the grounds. You were right, that was all it took. Now for the bigger question; How come one side is brighter than the other. Rear left is dimm, and right front is dimm. More grounding problems? I will also check the ground for the gas tank and see if that is the problem with the sending unit. But the needle does move though. Just only above "E". The ground probably is the problem also though.
Thanks again,
rick
p.s. If you have to buy parts online for the body or interior, where do you guys shop? Truck is rusty and I need to replace the doors. (Can see through to the ground) Doesn't bother me any but girlfriend won't ride in the truck, so need to fix.
thanks in advance.
Thanks again,
rick
p.s. If you have to buy parts online for the body or interior, where do you guys shop? Truck is rusty and I need to replace the doors. (Can see through to the ground) Doesn't bother me any but girlfriend won't ride in the truck, so need to fix.
thanks in advance.
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Posting Guru
Joined: Jun 1999
Posts: 2,415
Likes: 3
From: Comox Valley, Canada
Hmmmm....
Now for the bigger question; How come one side is brighter than the other. Rear left is dimm, and right front is dimm. More grounding problems?
Check the grounds, the sockets and the bulb itself for corrosion. If you have a voltmeter check and see if you are getting 12 volts to the light socket, if you aren't it could be a corroded power wire.
If I remember correctly Hawaii has an excellent environment for things to corrode in
Nothing like heat, humidity, salt air and water to encourage corrosion.Sparky
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Postmaster
Joined: Apr 2000
Posts: 2,838
Likes: 6
From: SD
Hmmmm....
[font color=red size=2]Here is it dusty, lots of gravel roads, often the dust gets into the inside of the lights and makes them dim. They may just need cleaned out.
Just a thought...
Marty
"Cleverly Disguised as a Responsible Adult"[/font]
Just a thought...
Marty
"Cleverly Disguised as a Responsible Adult"[/font]
Elder User
Joined: Aug 1999
Posts: 910
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Hmmmm....
I wonder if the leads to the "brighter" light are reversed. The bulb is an 1157, one filament is suppose to be brighter than the other. The Brighter one is suppose to come on when the turn signal or 4ways flash, the dimmer one is for running lights. The socket should have 3 connections, one for ground and one each for the brighter and dimmer filament. When they are correct the turn signal will make the running light brighter as it flashes. Check this out.
BBT
BBT
Posting Guru
Joined: Jun 1999
Posts: 2,415
Likes: 3
From: Comox Valley, Canada
Hmmmm....
I wonder if the leads to the "brighter" light are reversed. The bulb is an 1157, one filament is suppose to be brighter than the other. The Brighter one is suppose to come on when the turn signal or 4ways flash, the dimmer one is for running lights. The socket should have 3 connections, one for ground and one each for the brighter and dimmer filament. When they are correct the turn signal will make the running light brighter as it flashes. Check this out.
BBT
BBT
Hey excellant suggestion BBT. You never know with these "experienced" trucks by who and how the wiring was "fixed"
It sure would cause that problem if they were hooked up wrong, would also give dim brake lights on the incorrectly wired side.Sparky
Junior User
Joined: Sep 2000
Posts: 99
Likes: 1
Hmmmm....
Use one of those battery cable cleaners (with the long round wire brush). clean the heck out of every socket, spray them with WD40. You should be good to go on your lights.
As far as the gas guage goes, make sure the tank has a good ground to the frame. rust can make the stock ground lose contact.
As far as the gas guage goes, make sure the tank has a good ground to the frame. rust can make the stock ground lose contact.
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