I think the
White and
Blue work better for all years
IQ and
Excel carts.
For the
Regen-2 and other Model Years where the
Blue wire was
connected to the
harness instead of the controller, the
OBC provided power directly to the electrical system.
If the White and the Red/White wires going to the OBC are the same gauge, I would still use the White wire, but add a 10 amp inline fuse.
If the Red/White wire is a larger gauge, then use the Red/White on the OBC side of the connector and keep the fuse.
I like the idea of
not having any power going to the
Controller connector when the
Tow/Run is on Tow (which is how the OBC works).
Using the
Red wire would also provide
non-fused 48v power at the controller connector.
The above information is for
Sepex only
systems.
All model years of the
Series carts, the
OBC provided the
negative side of the
Solenoid on the
Yellow wire.
For the
Series carts You just have to
disconnect the
Yellow wire from the OBC and run it
directly from Solenoid to controller
B- (or other negative source like pack negative).