On 4/17/2013 2:45 PM, Kevin P. Gilleran wrote:
> Hi all,
> Does anyone have any experience using an alternative switch to the out of
> the stock 251941531T head light switch? Can the older and more available
> 251941531M version be modified to work in place of it?

Sorry, no experience, but the difference is mostly related to support
for daylight running lights on some versions. It could be made to work
with a bit of rewiring. It looks like US models didn't have the DRLs,
and the main difference in the switches is that the dimmer is broken out
separately on the new one, and that circuit has a separate fuse.

It looks like this would work:

Connect all the wires from the "T" switch to the same number terminal on
the "M" switch (X to X, 30 to 30, 56 to 56, 58 to 58), except those
which went to 58e and 58b. I don't know if the connector will just plug
in, or if the terminals are in the same place. Do not connect the wire
which went to terminal 58e (this drew power for the dimmer circuit),
insulate it well and put it aside. Connect terminals 58 and 58e on the
"M" switch. Connect the wires which went to 58b on the "T" switch to 58b
on the "M" switch THROUGH A 5A INLINE FUSE.