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How do I mount a Coin door light in this door?
Stingray:
Okay upon further thought I suppose I could be (probably am) wrong about this. I was thinkingin terms of auto wiring. Doesn't matter where your ground goes in that case, but when I thought about it, the whole car is grounded to the neg terminal on the battery.
-S
eightbit:
--- Quote from: Stingray on February 04, 2004, 02:55:47 pm ---Okay upon further thought I suppose I could be (probably am) wrong about this. I was thinkingin terms of auto wiring. Doesn't matter where your ground goes in that case, but when I thought about it, the whole car is grounded to the neg terminal on the battery.
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In a car that is true since you are using a common power source.
PedroSilva:
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Techoverload:
OK On the I-pac yes it needs to return to the I-pacs ground as that is how the Ipac works it needs to be able to see that the connection is closed. That is the diffrence between a switch and a light. Your I-pac could care less if there are lights on your cabinet or not. A light works by passing electricity through the filament and to a ground....any ground..... so long as the electricity has a place to flow TO and the filament is somewhere in between the source and the ground you should be fine. People Tend to confuse positive...negative and ground. In electronics It can be important that your current returns through the negative wire as it uses that as part of a "am I open or closed signal" which is then also dumped off at "ground".
A switch isnt the end user of the power the end user is the I-pac. In a light bulb the end user is the light itself.
A diffrent way to look at it is this...... measure the current going into a micro switch with a multi meter then close the switch and measure the current on the "negative" side of the switch.....it should be the same (save for a very small fraction of current loss due to the switch)
Ok so that was really long winded but I am not great at explaining things all the time.
Yes you can drop the ground wire from a light bulb to a chassis ground.......no you cant do the same with an I-pac unless it is made to use chassis ground as its return (car alarms are usually done this way.....one wire from the alarm box goes to chassis ground, then all the "sensor" switches negative side can be wired to the metal anywhere on the car instead of having to go back to the control box)
eightbit:
--- Quote from: PedroSilva on February 04, 2004, 06:58:17 pm ---Here:
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Hope it helps ...
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