Electrical issues...

[fst2002]

Hey Guys... so 7 years ago I dismantled my car for a quick rebuild... everything worked then! lol!!! while I have a few other things like blower motor etc, most I can figure out but two I think I'm on right track but trouble shooting electric is not a strong point...

 

1.) Turn signals`... All lights are new and just installed LED in rear. left side turn signal works perfectly but the right not so much. Flasher is new and 3 wire change out. When I turn flashers on everything works as it should but in blinker / turn signal mode nope! Went to fuse box. flashes on right nothing on left. Little doohickey in column is set to tolerance as per book. I have purchased a broken one to see if I could use it to understand it and maybe re-whatever it to work without success. I'm leaning to column turn signal stalk... thoughts...

 

2.) Parking lights... get power to left side no power to right.... put a test light on switch in dash ... it looks like both the left and right are opposite each other, ( I have not physically taken out switch yet just gauge cluster ) I would think they would be on same terminal...

 

I have tried to explain as best I can... Looking for a jar of 2 cent pieces thrown in here!

 

Thganks

 

Pete

Edited December 28, 2023 by fst2002
typing error

[Mark92131]

2 hours ago, fst2002 said:

I'm leaning to column turn signal stalk... thoughts...

 

Pull the turn signal switch and use a Multi-meter to check the continuity between Pin "54" and "R" when the stalk is in the right turn position.  If no continuity between the pins, you have a bad or dirty turn signal switch.  You could try cleaning it, but that doesn't always work.

 

Mark92131

[John76]

Is your '72 a European model or was it delivered to England as a US spec car?

6 or 12 fuse?

Here's the schematic for a 12-fuse USA "roundie" (round taillights).

The right and left side turn signals and flashers are on two different fuses (#5 for Left, #6 for Right). 

Are your turn signal lamps all LED? If so, they need a special flasher unit to work like the incandescent flasher.

Hope this helps locate the problem.

 

BMW 2002 USA 12Volt 12 Fuse RoundTailight.pdf

[fst2002]

Hey John   Thanks!  that schematic is so clear and legible  Delivered as US spec and 12 fuse model. The LED I was referring to are the tail light upgrade from: classicautoleds.com/led-lights/bmw-2002/bmw-2002-1966-1973-led-light-set\ 

Nice and bright! Easy upgrade and install and just have to figure out whats wrong! Had problem before I swapped these in and was hoping might fix problem at same time! This is the part that includes the wiper function into the right side directional btw.

Shows part number 1 352 958 on housing.

 

Parking light seems to be switch. Will play with it tomorrow!

[fst2002]

Bad switch! Thanks!