At 02:36 PM 9/15/2009, Rico Dagastino wrote:
>Can anyone tell me the difference between relays number 251 919 376 used on
>  the 84 Vanagon and 191919376A used on the 87 Vanagon.  My 84 has the 251
>relay and the 87 has the 191 relay.  Are they interchangeable?

Yes, they are.  Other than physical, the difference is that the newer
one a) won't cause the gauge needle to move appreciably when it sets
off the blinker and b) it latches on and won't stop blinking until
you shut off the ignition.

It's smaller physically because they apparently had a custom chip
built that replaces a lot of discrete wiring in the earlier one.

The reason the needle doesn't move is that the new one just pulses
the line briefly often enough to keep the blinker going, instead of
applying a steady overheat signal.

Yours,
David