Quote:
Originally Posted by aemravan
I'm not electrician.. but I THINK you could more properly accomplish what you're after by excluding the relay feeding from your highbeams and just replacing it with a diode so that you can't back-feed voltage from your ARM switch up to your highbeam..... right?
with the setup as you have drawn up.. yes, theoretically the voltage source is the same, but in reality, there will always be a differential in actual voltage which will cause a potential, and I"m not saying you'll blow anything up.. but doesn't seem to be the correct way with having voltages potentially backfeeding.
-with a diode in place of the relay, with your highbeam on, that same 12v source can pass to the panel with switch 2 off.
-With switch 2 on and highbeams off, you would power the panel and the diode would keep the 12v from backfeeding the high beams
-with both on (first of all, what is the scenario that would require both to be on?) I would think just to be on a safe side you would need to look into either installing another diode to keep the backfeed from happening from the highbeams, or, possibly come up with a relay circuit that cuts off the feed from the ARM switch (if on) when the highbeams are triggers .. but it's too early for me to rationalize that right now lol
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Thanks for the reply! I did look into using a diode between the high beam and the switch panel but it seems that diodes always have a small voltage leak... at least the crappy ones from Amazon did. I tested a few and they did have a small voltage leak. I figured a relay would fix that issue of backfeeding into the highbeams.
So in the scenario of either or on, it should be pretty straight forward. The scenario of BOTH on was a just in case I did so by mistake. There is no use case for it. I was just trying to think of all scenarios and protect myself.
But you are right, either paths could have slightly different voltages due to various voltage drops, however minor it may be.... Definitely something to think about. I may go the route of coming up with some way to have one path cancel the other out if both were to ever be engaged. I might be over
thinking it and some good diodes would prob do the trick huh?
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