I tested it on the bench by bridging 12v across two pins and ground on the other On the regulator and it worked fine.
I don’t have 12v in the red incoming wire that I Think I should have, but I do have variable voltage in the white/pink Wire
Hoping somebody has seen this before as it is driving me somewhat crazy.
A friend of mine has an R170 SLK320 from 2000, it has has a number of issues which i am steadily working through.
The final issue is that the blower motor/fan for the interior heat/AC does not work at any...
Does anybody know if these K40 relays with different part numbers are interchangeable?
I removed from the car A1705450305
Searching ebay for the K40 relay also brings up part number:
They all look identical, image is for reference.
The one that i have...
My view is that i depends on how handy you are with the spanners.
Its a 30 year old car, I had a 560 sec, and they are fabulous, but as a daily driver not so sure.
That one looks very good, but they can hide a multitude of sin, need to find the rust, its there, unless its been full restored...
I have done this from the positive under the red tab, not an issue.
There is a nice earthing point about 6 inches in front of the positive connector, with from memory two earth wires going to it, you can use that as the negative.