[C2] Elecrical issue on my 67
07-11-2018, 12:59 PM
#1
Racer
Thread Starter
Elecrical issue on my 67
I suddenly lost the temp gauge, fuel gauge and the backup lights this sunday driving my 67. Enerything functioned just fine, but then...not.
I have checked and cleaned the bulkhead connectors (they looked fine) but it did not help. I have measured the voltage on the fuses, and the top fuse has 12.5V measured on both side connectors. This circuit is the top fuse, right?
Where do I look now? Is there a common feed or ground cable to check?
I have checked and cleaned the bulkhead connectors (they looked fine) but it did not help. I have measured the voltage on the fuses, and the top fuse has 12.5V measured on both side connectors. This circuit is the top fuse, right?
Where do I look now? Is there a common feed or ground cable to check?
07-11-2018, 02:53 PM
#2
Team Owner
If that's all you lost, it's not a ground issue and only the temp wire goes through the bulkhead connector. You can eliminate those. The top fuse does feed all those. Measure the voltage on the CLIP that holds the fuse on both ends and not just the fuse. If you have it on both clips, you almost certainly have a bad connection on the back side of the fuse block or a break in the pink wire coming out and going up to the gauges and to the b/u light plug under the hood. You need to concentrate on that fuse area, sometimes the fuse has a corroded connection at the clips or behind the box, or even within the fuse itself. Measure the clips on that top fuse and post back what you get.
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1965fuelie (07-12-2018)
07-11-2018, 03:10 PM
#3
Racer
Thread Starter
If that's all you lost, it's not a ground issue and only the temp wire goes through the bulkhead connector. You can eliminate those. The top fuse does feed all those. Measure the voltage on the CLIP that holds the fuse on both ends and not just the fuse. If you have it on both clips, you almost certainly have a bad connection on the back side of the fuse block or a break in the pink wire coming out and going up to the gauges and to the b/u light plug under the hood. You need to concentrate on that fuse area, sometimes the fuse has a corroded connection at the clips or behind the box, or even within the fuse itself. Measure the clips on that top fuse and post back what you get.
07-11-2018, 08:58 PM
#4
Team Owner
Note that in this picture the block is rotated upside down, it's still the top fuse with the pink wire.
Last edited by 65GGvert; 07-11-2018 at 09:08 PM.
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1965fuelie (07-12-2018)
07-12-2018, 04:23 AM
#5
Racer
Thread Starter
Thank you again, Jack!
You where right! Even if Ihad the fuse out inspecting it and even measured current through the end clips, a jumper cable between the fuse clips with the fuse removed fixed it.
This is the second time you helped me with electric trouble, last time it was the headlights.Thank you so much!
Now, how to get the clips cleaned up? I have soaked them in WD40 and scraped the inside with a small screwdriver, but no luck yet. Any tip to get them cleaned up?
You where right! Even if Ihad the fuse out inspecting it and even measured current through the end clips, a jumper cable between the fuse clips with the fuse removed fixed it.
This is the second time you helped me with electric trouble, last time it was the headlights.Thank you so much!
Now, how to get the clips cleaned up? I have soaked them in WD40 and scraped the inside with a small screwdriver, but no luck yet. Any tip to get them cleaned up?
Last edited by 1965fuelie; 07-12-2018 at 08:11 AM.
07-12-2018, 07:48 AM
#6
Racer
Thread Starter
Fixed it! Trying to get the currnt flowing almost made me go mad. Tried to clean with a piece of course sandpaper folded to just fit, but no result. Then tried to clean with cotton pins soaked in laquer thinner. Hope was rising when the cotton pins got dirty and then, when reinstalling the fuse fot the 40’th try, success! Everything is working properly again.
Thanks again to 65GGvert for helping me in the right direction
Thanks again to 65GGvert for helping me in the right direction
07-12-2018, 07:53 AM
#7
Team Owner
Thank you again, Rick!!!
You where right! Even if Ihad the fuse out inspecting it and even measured current through the end clips, a jumper cable between the fuse clips with the fuse removed fixed it.
This is the second time you helped me with electric trouble, last time it was the headlights.Thank you so much!
Now, how to get the clips cleaned up? I have soaked them in WD40 and scraped the inside with a small screwdriver, but no luck yet. Any tip to get them cleaned up?
You where right! Even if Ihad the fuse out inspecting it and even measured current through the end clips, a jumper cable between the fuse clips with the fuse removed fixed it.
This is the second time you helped me with electric trouble, last time it was the headlights.Thank you so much!
Now, how to get the clips cleaned up? I have soaked them in WD40 and scraped the inside with a small screwdriver, but no luck yet. Any tip to get them cleaned up?
07-12-2018, 08:08 AM
#8
Team Owner
You can spray the fuse clip with DeOxit and emery cloth it - but if the fingers have been weakened then its a toss up if things will stay connected electrically....
I'll probably scandalize some but I have put one of these devices in the fuse holder in such cases.....the terminals are a bit thicker (you can actually spread them even wider if necessary) and their material seems to "mate" better electrically than the glass fuse (normally I avoid such stopgap fixes but the alternative is a new fuse box/harness which is expensive and requires careful installation). These are also perfect for troubleshooting a car circuit where the fuse is continually blowing each time you change it as you're diagnosing the problem:
I'll probably scandalize some but I have put one of these devices in the fuse holder in such cases.....the terminals are a bit thicker (you can actually spread them even wider if necessary) and their material seems to "mate" better electrically than the glass fuse (normally I avoid such stopgap fixes but the alternative is a new fuse box/harness which is expensive and requires careful installation). These are also perfect for troubleshooting a car circuit where the fuse is continually blowing each time you change it as you're diagnosing the problem:
Last edited by Frankie the Fink; 07-12-2018 at 08:15 AM.
07-12-2018, 08:23 AM
#9
Racer
Thread Starter
Sorry about the name confusion. Checked your profile, but my short term memory isn’t functioning properly, I guess.😀
07-12-2018, 11:31 AM
#11
Le Mans Master
Fixed it! Trying to get the currnt flowing almost made me go mad. Tried to clean with a piece of course sandpaper folded to just fit, but no result. Then tried to clean with cotton pins soaked in laquer thinner. Hope was rising when the cotton pins got dirty and then, when reinstalling the fuse fot the 40’th try, success! Everything is working properly again.
Thanks again to 65GGvert for helping me in the right direction
Thanks again to 65GGvert for helping me in the right direction
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65GGvert (07-13-2018)
07-12-2018, 12:17 PM
#12
Team Owner
Drives folks like him (and me) nuts...
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65GGvert (07-13-2018)
07-13-2018, 09:40 AM
#13
Racer
Thread Starter
Oouuchhhh.... here we go again. Took the 67 out to check function today, and temp gauge and backuplights worked as they should and I was happy.....until I backed up into the garage and I noticed there where no brake lights. They where there yesterday, but then...not. So... turn signals works, but no rear lights and brake lights. Front park/position lights works. Where do I check now? Another fuse problem?
07-13-2018, 10:29 AM
#14
Team Owner
Oouuchhhh.... here we go again. Took the 67 out to check function today, and temp gauge and backuplights worked as they should and I was happy.....until I backed up into the garage and I noticed there where no brake lights. They where there yesterday, but then...not. So... turn signals works, but no rear lights and brake lights. Front park/position lights works. Where do I check now? Another fuse problem?
07-13-2018, 10:56 AM
#15
Racer
Thread Starter
The turn signals functions front and rear, but no brake lights. The front park lights is there, but no rear lights. The backup lights is there now, but if I remember correctly I gave them an additional ground years ago because they where unstable.
07-13-2018, 11:06 AM
#16
Racer
Thread Starter
This is the car with trouble. Just took this picture in my garage when trying to solve this lightmare...😜
07-13-2018, 11:11 AM
#17
Team Owner
Does the license plate light work?
07-13-2018, 11:12 AM
#18
Team Owner
And fuel gauge?
07-13-2018, 11:30 AM
#20
Racer
Thread Starter
OK, solved it,
Should have learned from yeasterday. Jumper cable did it again. Time for cleaning up the entire fuse box.
Thanks again 65GGvert,
Should have learned from yeasterday. Jumper cable did it again. Time for cleaning up the entire fuse box.
Thanks again 65GGvert,