Ok Guys,

Hopefully this might be the last post on the subject.

I think you must by now all know my problem (Low voltage to ecu when lights/ancillaries switched on).

I've sorted this problem out by running a cable from the + terminal on the battery, through a relay and direct to the ecu. I now get 12.5 volts with lights/ancillaries on.

However, on the + terminal of the battery, there are three small black cables, that are tails of larger cables. One of them was getting very hot, not only when using lots of ancillaries, but it was even quite warm just on tickover with no anciallries on. I'm trying to identify what this supplies power too, as this may point me to the original problem of something drawing alot of voltage.

On the + terminal of the battery, there are three small black wires which lead to (within a few inches) three larger cables. I guess these are basically safety tails, that would burn out in the case of an electrical problem before the mail power leads burned.

The three leads are as follows

The top black tail lead, leads to a red wire which is thicker..... This is the small black lead that seems to be getting hot, and I need to know where it supplies power too as this could be my problem.

The middle lead, leads to a Red Wire which is thircker, with a Blue Line running along it. (This is ok)

And the bottom lead, leads to a thicker Red Wire (This is ok)


Any help much appreciated.

As in earlier posts I have been advised to discard the three thin black tail wires and continue the thicker wires all the way to the + terminal on the battery.

I have some 27amp wire, which is much larger than the original black tail wires is this suitable ????