Trimmer Pot Issue

Without knowing what circuit you're using it with, it's pretty hard to even hazard a guess as to what is going on.

The parts are the ones you mention in previous posts...

TheDude23112 posted:

When using for led passenger lights:

• with PART: DigiKey 3362P-502LF-ND DESC: TRIMMER 5K OHM 0.5W PC PIN;  I get no lights and about 7.14 v
• without trimmer pot lights work fine with about 7.8 v.

Do i need trimmer pot, or do i need a different one?

Thanks

An adjustable constant current supply is best.

http://hennings-trains.shoplig...regulator-2-pcs.html

If you look, I'm using a 200 ohm pot, not a 5K pot!  A 5K pot would be very bad in this circuit!

Thanks.  Another really bad mistake by me.  Last time it was confusing "o" and "0".

I appreciate your assists.

It works much better with 200 ohms, and don't forget the 27 ohms, it provides a maximum current limit.  You don't really ever want that resistance to go to zero in that circuit.