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Discussion Topic:
Circuit Braker:
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TomO |
08-22-2020 @ 7:57 AM
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Senior
Posts: 7256
Joined: Oct 2009
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Glad that you now have bright lights and good voltage to the bulbs. Before you put your voltmeter away you should do the following ground circuit test. + lead of meter on POS battery post and the COM lead of the meter to the grounding pigtail in the head light bucket. Turn on the lights and read the meter. The reading should be 0.1V or less. If it is a greater reading, you have poor grounding connections most likely between the fenders and the body. Any connections that are hot should be serviced. If it is bullet connectors, make sure that the connectors are pushed all of the way into the tube. If they are nut and bolt connections like on your circuit breaker, remove the nuts and clean the corrosion away. You can also use a conductive grease , like CAIG Deoxit L260 c1, on all of the connections to help put the bullet connector together and protect the connections from corrosion. https://www.amazon.com/DeoxIT-Grease-L260Cp-copper-particles/dp/B002KAFCCE/ref=sr_1_22?dchild=1&keywords=conductive+grease+for+electrical+connections&qid=1598106218&sr=8-22 I would not disturb any connections that are not hot until you establish that every thing is working correctly, then you can do a few connections, that haven't been done, at a time and give them a good test before disturbing other connections. Good Luck
Tom
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fortyford |
08-21-2020 @ 6:30 PM
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Member
Posts: 218
Joined: Nov 2009
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My problem is solved.It was the circuit breaker.Tom I am still checking connections,I still have some that are very hot???
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fortyford |
08-21-2020 @ 8:51 AM
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Member
Posts: 218
Joined: Nov 2009
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Tom it is a new one I got from Kube.A sevice replacement that should do the job.
This message was edited by fortyford on 8-21-20 @ 8:54 AM
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TomO |
08-21-2020 @ 8:25 AM
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Senior
Posts: 7256
Joined: Oct 2009
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There is serious corrosion between the terminal nuts and the breaker that could have been the cause for your voltage drop. What are you replacing your circuit breaker with? Once you have the circuit breaker installed, do a quick check of all your bullet connectors by turning on the lights and feeling the connections. If you find any that are warm or hot, check to make sure that the bullets are fully seated in the connector. I would not remove the wiring cover from the firewall to check connections under there unless the voltage drop at the headlights is still high.
Tom
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fortyford |
08-20-2020 @ 2:21 PM
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Member
Posts: 218
Joined: Nov 2009
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I got the breaker out and I think it looks rough!I have a new one coming.Here is a photo of the old one.Tom,I will clean as you suggested and see what I have as voltage in and out.
This message was edited by fortyford on 8-21-20 @ 4:54 AM
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TomO |
08-18-2020 @ 6:55 AM
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Senior
Posts: 7256
Joined: Oct 2009
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The contacts are silver plated, so the best way to clean them would be to use a piece of paper saturated with contact cleaner and draw it through the contacts a couple of times. An abrasive such as 1,000 grit paper will remove much of the plating.
Tom
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fortyford |
08-17-2020 @ 7:11 AM
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Posts: 218
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Thanks Tom for your help.I am going to try what you suggested and see if this helps.If not I am just going to replace it.What would be the best way to clean the contacts?
This message was edited by fortyford on 8-17-20 @ 7:14 AM
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TomO |
08-17-2020 @ 6:51 AM
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Senior
Posts: 7256
Joined: Oct 2009
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I looked at my spare circuit breaker and it looks like you can drill the rivets that hold the cover on, clean the contacts and reinstall the cover with small screws. Before you do that, I noticed that the terminal posts have 2 nuts each and like the ignition resister, the bottom nuts can come loose when the upper nuts are removed, so I would remove the wires, loosen the lower nuts 1/2 turn and tighten them, replace the wires and tigh6ten the top nuts. Use a wrench with a short length as the nuts only need about 10in.lbs. to be tight.
Tom
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40 Coupe |
08-15-2020 @ 9:43 AM
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Senior
Posts: 1678
Joined: Oct 2009
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With the dim lights on place a jumper across the two terminals of the circuit breaker. If the lights get bright, you may have a problem with dirty contacts. If the lights stay dim, look for your problem somewhere else.
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TomO |
08-15-2020 @ 7:17 AM
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Senior
Posts: 7256
Joined: Oct 2009
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It looks like your circuit breaker is bad. The .05 is a good reading. The 1.15 drop across the circuit breaker is excessive. I will look at my spare circuit breaker to see if there is an easy way to repair one and let you know what I think.
Tom
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