No problem, glad to help mate! The standard ones are probably ok but this was an aftermarket addition and maybe not rated correctly for the ambient temperature plus current 👍
These breakers will actually become more sensitive to the heat as they age (just like I have living in the Sonoran Desert of Arizona.) Replacing them will often fix the issue. You can buy them at your local auto parts store and they are fairly inexpensive.
Those types of self resetting breakers, for the uninitiated, rely solely on a heat sensitive metal bridge to break the circuit. They are shaped so that when they heat to certain temperature, the metal plate springs back off one side of the connection. When the metal plate cools, it goes back to its original position. They're clever but yeah, they fatigue with age and can be overly heat sensitive if they're not insulated from excessive heat.
@@TheMusingGreg IMHO the key here is age and what you mention.... insulation. IMHO this auto reset fuse is likely called for by the manufacture for a good reason and should ONLY be replaced with another auto resetting fuse. Maybe you did??? Figure the Autoreset is a safety feature. Blown fuse and losing your trailer brakes due to it.... NOT GOOD. Insulating it might keep it from tripping from ambient heat when it is old and in a weakened state .... but insulating it might also hide upcoming failure of the fuse.... soooooo.... again it is a safety feature.. when it starts tripping like that in hot weather...... cool (pardon the pun) that is your sign.... time to change it out before it totally fails and you loose brakes.
maybe you or a reader can help me with an auto reset fuse question... how fast does this type of fuse auto reset? Would think it would take at least a few seconds to reset. In my mind this said I should be able to attach a voltmeter (attached correctly) and watch it drop voltage when tripped..... and then raise voltage again due to resetting. Reason I ask is I built a test setup with this in mind. Wanted to find what was shorting out and had already twice blown different 50amp fuses; pretty much immediately; when the relay this blowing fuse is part of, got activated. This strip fuse is said to be a built in protection from the HOT line between Glow Plug Relay and battery HOT*. A few had suggested I was blowing fused due to a short to ground somewhere in path between relay and tip of one of the glow plugs. This was what I was going to test. Goal was to test by finding what wire/glow plug trips the fuse by seeing which one(s) shows a volt drop on a voltmeter due to it getting it tripped. First though had to test that theory before set out to test what was tripping the fuse. So ran a test with all the wires still attached to see if voltmeter did what I assumed it would. Once verified; plan was to pull all the Glow Plug wires free from the Glow Plugs and then start testing. Intent then was to reattach GPlug wires; one at a time, to see which GPlug or its wire causes the fuse to trip by looking to see changes on the volt meter. With GPlugs and wires all still in place; tested my assumption** ..... Well volts never dropped of any significance in my test. What does that mean??? is my assumption wrong??? orrrrrr did my short to ground (if there was one) resolve itself.??? Maybe had two bad fuses?? both were old. Hence my question.. can this fuse re-set itself so fast I would not see see volt changes on a meter in a gap between Tripped and Reset??? *. Strip fuse this auto re-set ( test ) fuse replaced, sits between fulltime hot from battery to second point on the relay. Wired the auto-reset fuse the same. full time HOT; wired to Brass Lug in back of a Bussman auto resetting 50amp fuse; like the one in this video. The silver lug on back wired to where the other end of OEM strip fuse would attach. ** voltmeter attached at Silver lug on back of fuse... assuming that should show a drop in voltage if the fuse trips, because no power would flow thru the fuse during the tripped phase. coachgeo
well CRAP grrrrr..... got question answered in above post....but for unfortunate reason. Am back to popping relay fuse again that apparently was not popping yesterday, Ufortunately that did answer the question..... yes the auto reset fuse..... the time between trip and reset is for sure is slow enough to see complete drop in voltage to zero. now have to figure out how to take apart a MB Glow harness plug (which) plugs into relay so can replace all the wires from that to each glow plug.
@@TheMusingGreg Not sorted. Looks like will have to replace the whole harness and relay with something else.. Worked on it all day and got nowhere. Dont have a good enough meter to ohm out anything clearly to trace it out either. That's why went with the auto reset fuse test setup in the first place. Giving up and replacing it all. Luckily have bits and pieces to cobble something together.
Good point. My wiring wasn't long enough for that, it was on the inlet side but towards the firewall. Maybe if it was near the front it would have been better.
@@TheMusingGreg I wasn’t having a dig at u mate what your pointing out is there good I had the same problem with my spot lights years ago took me a while to figure it out with the breaker definitely dangerous being on ya brakes
@@stevencondron9355 Mate I didn't take it that way at all, but thanks for checking back just in case. I was saying that if Redarc advise not to use a circuit breaker then good on them for saying that, as you say it's a dangerous thing to have disconnecting on brakes! Cheers mate.
i think this is whats causing our prado's pre crash safety malfunction, the breaker is getting too hot in engine bay and tripping, causing brake controller to go off and car doesnt like it.
I remember watching this about a year ago, if this didnt fire people up against tyranny then nothing will. People are so complacent when it doesn't affect them directly but the fact is this affects every free law abiding citizen.
I don't like those self resetting circuit breakers in principle. If they open on a fault or overload and the fault condition still exists, they will reclose onto the fault. If this happens enough, the wiring could be on fire or the contacts could even weld closed. Fuses are far safer.
I've got a pajero too. In the process of changing all my circuit breakers for fuses. Thanks for confirming my concerns about heat and CB's
No problem, glad to help mate! The standard ones are probably ok but this was an aftermarket addition and maybe not rated correctly for the ambient temperature plus current 👍
These breakers will actually become more sensitive to the heat as they age (just like I have living in the Sonoran Desert of Arizona.) Replacing them will often fix the issue. You can buy them at your local auto parts store and they are fairly inexpensive.
Right that's interesting, I didn't know that. I guess it would make sense that originally it wouldn't have done this. Thanks for sharing!
Those types of self resetting breakers, for the uninitiated, rely solely on a heat sensitive metal bridge to break the circuit. They are shaped so that when they heat to certain temperature, the metal plate springs back off one side of the connection. When the metal plate cools, it goes back to its original position. They're clever but yeah, they fatigue with age and can be overly heat sensitive if they're not insulated from excessive heat.
Exactly right. That's what caused the problem for me!
@@TheMusingGreg IMHO the key here is age and what you mention.... insulation. IMHO this auto reset fuse is likely called for by the manufacture for a good reason and should ONLY be replaced with another auto resetting fuse. Maybe you did???
Figure the Autoreset is a safety feature. Blown fuse and losing your trailer brakes due to it.... NOT GOOD. Insulating it might keep it from tripping from ambient heat when it is old and in a weakened state .... but insulating it might also hide upcoming failure of the fuse.... soooooo.... again it is a safety feature.. when it starts tripping like that in hot weather...... cool (pardon the pun) that is your sign.... time to change it out before it totally fails and you loose brakes.
maybe you or a reader can help me with an auto reset fuse question...
how fast does this type of fuse auto reset? Would think it would take at least a few seconds to reset. In my mind this said I should be able to attach a voltmeter (attached correctly) and watch it drop voltage when tripped..... and then raise voltage again due to resetting.
Reason I ask is I built a test setup with this in mind. Wanted to find what was shorting out and had already twice blown different 50amp fuses; pretty much immediately; when the relay this blowing fuse is part of, got activated. This strip fuse is said to be a built in protection from the HOT line between Glow Plug Relay and battery HOT*. A few had suggested I was blowing fused due to a short to ground somewhere in path between relay and tip of one of the glow plugs. This was what I was going to test.
Goal was to test by finding what wire/glow plug trips the fuse by seeing which one(s) shows a volt drop on a voltmeter due to it getting it tripped. First though had to test that theory before set out to test what was tripping the fuse. So ran a test with all the wires still attached to see if voltmeter did what I assumed it would. Once verified; plan was to pull all the Glow Plug wires free from the Glow Plugs and then start testing. Intent then was to reattach GPlug wires; one at a time, to see which GPlug or its wire causes the fuse to trip by looking to see changes on the volt meter.
With GPlugs and wires all still in place; tested my assumption** ..... Well volts never dropped of any significance in my test. What does that mean??? is my assumption wrong??? orrrrrr did my short to ground (if there was one) resolve itself.??? Maybe had two bad fuses?? both were old. Hence my question.. can this fuse re-set itself so fast I would not see see volt changes on a meter in a gap between Tripped and Reset???
*. Strip fuse this auto re-set ( test ) fuse replaced, sits between fulltime hot from battery to second point on the relay. Wired the auto-reset fuse the same. full time HOT; wired to Brass Lug in back of a Bussman auto resetting 50amp fuse; like the one in this video. The silver lug on back wired to where the other end of OEM strip fuse would attach.
** voltmeter attached at Silver lug on back of fuse... assuming that should show a drop in voltage if the fuse trips, because no power would flow thru the fuse during the tripped phase.
coachgeo
well CRAP
grrrrr..... got question answered in above post....but for unfortunate reason.
Am back to popping relay fuse again that apparently was not popping yesterday, Ufortunately that did answer the question..... yes the auto reset fuse..... the time between trip and reset is for sure is slow enough to see complete drop in voltage to zero.
now have to figure out how to take apart a MB Glow harness plug (which) plugs into relay so can replace all the wires from that to each glow plug.
Oh pain! I'm going to answer but I wanted to have enough time to read and understand your issue first. So have you got it sorted now?
@@TheMusingGreg Not sorted. Looks like will have to replace the whole harness and relay with something else.. Worked on it all day and got nowhere. Dont have a good enough meter to ohm out anything clearly to trace it out either. That's why went with the auto reset fuse test setup in the first place. Giving up and replacing it all. Luckily have bits and pieces to cobble something together.
The short answer is that it should reset as soon as the temperature drops enough. So at ambient temperature I'd expect it to take 15-30 seconds.
Just move the circuit breaker to the front of the engine bay .. on the inlet side..where the temps are usually much lower. Usually works .
Good point. My wiring wasn't long enough for that, it was on the inlet side but towards the firewall. Maybe if it was near the front it would have been better.
Excellent video Mate!
Cheers, glad it was helpful!
What is the larger black 15 amp blade fuse for the radio? Is this an automatic reset fuse? the normal 15 amp blade fuses are typically blue.
In what part of the video mate?
Great advice! Thanks for sharing.
My pleasure, glad it was helpful!
I assume the correct thing to use here is a midi fuse?
Yep a midi fuse, or even a spade fuse, would be a much better choice in a hot environment.
How embarrassing! Wife got it sorted!😄😄
Too true mate! 😂
Nothing better than fixing an on going problem. Bravo, congrats to the missus 😂
I wouldnt have guessed those CB where effected by heat. Great to know.
Haha thanks! Yeah it's nice to have it solved at last, initially I dismissed the temperature thing as I couldn't see a correlation! 👍
ALL circuit breakers are effected by heat. JSYK
That’s why on Redarc tow pro they tell u do not use a circle breaker
That's good to know if that's what they do. I don't have a Redarc Tow Pro so I don't know what they advise, but if so that's good advice.
@@TheMusingGreg I wasn’t having a dig at u mate what your pointing out is there good I had the same problem with my spot lights years ago took me a while to figure it out with the breaker definitely dangerous being on ya brakes
@@stevencondron9355 Mate I didn't take it that way at all, but thanks for checking back just in case. I was saying that if Redarc advise not to use a circuit breaker then good on them for saying that, as you say it's a dangerous thing to have disconnecting on brakes! Cheers mate.
i think this is whats causing our prado's pre crash safety malfunction, the breaker is getting too hot in engine bay and tripping, causing brake controller to go off and car doesnt like it.
@@blake-dragonsbreathvapesho6937 Thanks for sharing, hope this helps you get it sorted!
Ok
Cheers!
I remember watching this about a year ago, if this didnt fire people up against tyranny then nothing will. People are so complacent when it doesn't affect them directly but the fact is this affects every free law abiding citizen.
Well it might do, depending on your perspective!
I don't like those self resetting circuit breakers in principle. If they open on a fault or overload and the fault condition still exists, they will reclose onto the fault. If this happens enough, the wiring could be on fire or the contacts could even weld closed. Fuses are far safer.
That's a good point! Thanks for sharing