How to make your own test light / circuit tester. DIY incandescent test light.
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- čas přidán 9. 11. 2020
- I will show you how to make your own test light / circuit tester.
Hope You Learn Something
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Thank you very much for explaining very clearly and with great patience
Easy as it gets simple straight to the point in (short ) video. Well done mate . You learned me something
Thanks mate. Explained it clear & short.
thanks for sharing , im chasing a dead short after blowing 3 $10 alternator 100amp fuses and my old old school test light that used those little glass fuses (that you cant seem to get anymore), i started searching for this simple diy method so i can shove the wires into my dead shorted circuit in place of the fuse and start disconnecting things until i break the short and the lamp goes out , i just had no idea what globe to use , thanks champ the headlamp globe is perfect and your video was the only one i could find , i guess i needed the right words in search , later mate
Thanks mate! Always informative
Feeding 12V into 5V circuit. Sounds great.
thats the beautiful he just said... hes not.... the voltage will drop to almost zero after the lamp (if it finds the ground) if it finds vcc of the sensor (depending on resistance) they would divide the voltage so would be around 6v... i just wouldnt do it with a H7 bulb... a 21W from the stop or blinker would burn and blind him less and would not stress the wiring so much
well explained mate thank you
Thank you so múch as im stumped with electrical problems in my boat and im not near a shop tomorrow to buy a test light. Bless you
Nice tip, cheap, easy and very useful.
Thanks for your feedback. Very much appreciated 👍🏻
Amazing good job buddy keep it up your video has solved alot of question in my mind thanks
Great video!
ignore my comment/question from your last video, because this video answers that
I liked ✅
What wire did you use cheers.
I'm an electrical newbie. Is there a difference between using an incandescent bulb test light to an LED digital one ?
Yes the led test light will not absord the load it will let the amperage continue straight past the led which could blow modules
Incandescent test light has a bulb that will absorb all the current so protects cuircuites from being damaged if the connected wrong
@@EverydayMechanic Thank You. Everyday's a school day.
@@NaziHampsterleds need diode . Use ordinary t10 signal bulb with signal socket and use solid copper wire as a pointer
How do you know when to connect the test bulb to the negative or positive side of the battery?
the light got a coil inside meaning that it does not matter how you place them on battery, all you got to do is ..... if you are trying to find the positive wire of something you place one lead of test light on the negatve post of battery and with the other lead of test light you touch the wire or connector you are trying to test for power... and when trying to find the ground you just do the opposite ,and lets say that you have it on positive and you are looking for negative and you by accident touch the positive of a wire ... it would not do anything because you are allready on positive and vice versa
@@FranciscoMartinez-of3gr Thank you so much
DIY automotive electrical testing tools you can build yourself:
czcams.com/video/wkUGeFYLgoo/video.html
I have to ask. What is the wrong way to test the circuits? How can you harm your computer?
If you make a connection from a module live straight to ground without a load to absord the amperage it will blow the driver inside module
Problem is even with a bulb, it isn't going to absorb a voktage difference. Some components in the ECU that read some sensors are very voltage sensitive and may only work upto 1V. The problem is if you unknowingly put 12V down that ECU wire, your going to blow that ECU. That's why you really need to be able to read schematics. You know what that wire your testing goes to, you know the voltage it operates on and now your going to prove that circuit with a probe. If you don't know where that wire or pin goes to or know the circuit you shouldn't be proving anything, that bulb isn't going to absorb fuck all when you energise a component that works on a couple of volts and you energise it with 12V OR even worse, reverse polarity too
Not going to buy circuit tester
Going get s bulb do same as you thanks.