ok then what is it ?
I took it off my cherokee as it wasn't connected to anything anymore.

5 wires, blue, green, purple, red, black
the large green was connected to 12v +ve. the black had been connected to something using a tap on connector. the rest i haven't got a clue. I'm guessing they are two small coils.
i'm guessing it might be a voltage conditioner of some sorts
spec details shown are
TT T3012
50/60Hz
switched 5A/240VAC.........direct 24VDC/10A
switched 10A/24VDC.........direct 120VAC/10AC
code on part is probably part number E11 020893.
or have i got one of those go faster gizmos that give me loads of mpg

COIL 12VDC