Interesting conversation. I found this on the web fwiw:
There exist packaged LEDs with two die connected in parallel but with opposite polarity with respect to the two input leads so that light will be emitted regardless of the polarity of the applied voltage.
The example that first comes to mind are the bi-color LEDs(or tri-color), such as the ones with red and green die. By control of the direction of the applied current it can be made to shine red light or green light. When subject to AC it appears (Red + Green) = Yellow.
source: https://forum.allaboutcircuits.com/...rized-and-non-polarized-led-different.140016/ [post #4]
That's followed by a little schematic. If that's correct, and it sounds correct, the packaging makes all the difference, and could be designed to supply the same color light regardless of polarity. We all agree that diodes only pass current in one direction. But we're talking about "bulbs" which are more than just diodes.
And don't let the question of the polarity of the light produced confuse the issue!
Another interesting sidenote. 7 referred to his "electronic engineering" education. When I was in school, it was called "electrical engineering", long before ICs, etc. Remember "solid state"?![]()
Back on topic now, folks. (attn)
Dropped off the car this morning at the dealership and getting the 30,000 mile service done. Pricey? Yes, but I don't do car maintenance and I keep my cars for 10 years so I think it's worth it.View attachment 220827
VERY pricey.
However the price at the bottom of that brochure is absolutely highway robbery.
$229 to... REMOVE, REGAP, and REPLACE the plugs in the CX9.
Replace?
How many plugs does the 9 have? 20?!?!?
You can't just put 4 new ones in for.... $229?!?!?!
Back on topic now, folks. (attn)
Dropped off the car this morning at the dealership and getting the 30,000 mile service done. Pricey? Yes, but I don't do car maintenance and I keep my cars for 10 years so I think it's worth it.View attachment 220827
Is brake fluid and transmission/transfer case oil replacement a recommended thing? I could only find brake fluid n the Mexico maintenance section of my manual (I don't understand why just Mexico), and the other 2 only if the vehicle were submerged.
Back on topic now, folks. (attn)
Dropped off the car this morning at the dealership and getting the 30,000 mile service done. Pricey? Yes, but I don't do car maintenance and I keep my cars for 10 years so I think it's worth it.View attachment 220827
The Diff Fluid is Recommended on AWD.Is brake fluid and transmission/transfer case oil replacement a recommended thing? I could only find brake fluid n the Mexico maintenance section of my manual (I don't understand why just Mexico), and the other 2 only if the vehicle were submerged.
Back on topic now, folks. (attn)
Dropped off the car this morning at the dealership and getting the 30,000 mile service done. Pricey? Yes, but I don't do car maintenance and I keep my cars for 10 years so I think it's worth it.View attachment 220827
What the hell they charging $500 for? Blech.
As stated, huge ripoff.Wheel rotation, wiper blades, brake fluid, general inspection, some component lubrication and some drain hole cleaning. $200 for that stuff isn't bad, especially if you're not mechanically inclined or don't have the tools/space/time to do them yourself.
The problem is that some dealerships will take this opportunity to try and get the owners to replace certain components early through recommendations on the general inspection they do. It's a profit generator that gives them an opportunity to pitch more profit generating services.
Dealer wiper blades suck by the way, if they are the OEM.
In the snow. Perhaps they've improved the design since the God awful blades my 2014 came with. Snow would build up on them so bad they'd stop wiping properly requiring pulling over and clearing them. Horrible.In what way do they suck? Ours are working quite well.
Shouldn*t be a problem with the wiper blade deicer that mine has. Hopefully
The wipers wouldn't contact the heated area long enough, so they still built up plenty. Hope the Mazda's is better.
They are not. In March I drove from Northern VT to PA during a snowstorm when the temp was around 25 degrees. I had to pull over 3 or 4 times to clear off all the snow and ice that was built up. This was with the defrost on high.