WE have an outlet for new Potentiometer's I am curios as to how many would be interested in the perchase of this Item?

Are you referring to the dash light dimmer unit ?

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1985 300D 198K sold
1982 300D 202K
1989 300E 125K
1992 940T

"If you dont have time to do it safely, you dont have time to do it"

"The democracy will cease to exist when you take away from those who are willing to work and give to those who would not."

I know the older 126 cars are potentiometers that directly connect to the power. The 2nd gen 126 cars are actually PWM controllers.

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Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k

I think, "just-n-time" reffering to the KE- mass air flow sensor's potentiometer.

I am interested. Price?

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2012 E350
2006 Callaway SC560

I just jumper it on the cars where it fails. 100% power is barely bright enough as it is.

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'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

Yes I am refering to air flow unit.

the price would be around $50.00

WTF, are you talking about !

Is potentiometer made by Bosch? P/n 3 437 224 035?

If new potentiometer made in China - it is, unfortunately, a bad deal.

He's referring to the rheostat dimmer for the instrument cluster and dash lights. Usually the left most knob on the cluster.

Early unit are simple rheostat potentiometer. Later versions (at least in 126) are PWM control units. They're backwards compatible too!

__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k

Thats more clear, Thanks

Interesting, if they're PWM they should be able to dimmer a set of LEDs

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth

Not necessarily, they are likely too slow and you'd end up with a strobe instead of steady lighting. An LED responds to pulses a lot differently (faster) than an incandescent....

__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

I'm waiting for my soldering iron to heat up so I figured I'd give it ago:

From what the scope says, it looks like the PWM controller outputs about 160 Hz signal. Here's the datasheet on the IC: http://www.datasheetcatalog.org/datasheet/stmicroelectronics/1408.pdf



I had some random 2V, 20mA Red LED sitting around, I threw a 500 Ohm resistor on it and here's the result. It does indeed dim... With better/brighter LED's you could probably achieve a better result.

For wiring reference:


Video, I didnt see any strobing effect when I filmed this:

__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k