Ok, it sounds like somebody has fitted a relay in the starter circuit
for one of 2 reasons.
Either, to work in conjunction with a alarm or immobiliser.
Or because they didn't like the starter solenoid being switched directly
from the ignition switch, other makes of car do often use a relay but
Fords of this sort of age never did.
It sounds like now the relay isn't wired up the same as it used to be.
One thought is that there are 2 different standard pinouts of relays,
one pinout has a coil and contact pin swapped compared to the other.
It could be that the relay has been swapped and now the coil is being
powered from what should have been the permanent live from the battery.
You need to check all 4 pins on the relay with a meter.
With the relay removed you should find one pin that has power only when
the ignition switch is in the start position.
Another wire sounds like it has a battery feed.
The 3rd is probably earth.
And the 4th will be the one that goes to the starter.
You can either remove the relay completly and link the 1st wire with the
last one so the ignition switch is connected directly to the starter
solenoid as normal.
Or, make sure that the battery feed is on one side of the contact, the
starter solenoid is on the other side.
One side of the coil is connected to the ignition switch and the other
connected to the earth.
Then, the ignition switch will switch on the relay and the relay will
switch on the starter solenoid.
This will not drain the battery unless the relay is full of water.
Personally i'd just remove the relay and link the 2 wires, if they are
the original wires they will be black with a blue or red stripe.
The less relays in the engine bay the better.
Jim
On 20/05/2012 18:59, jin wrote:
Jim, thanks very much for the detailed answer, I appreciate it very
much
Unfortunately I think im opening up a big can of worms here, I’ll tell
you what I know
when I acquired my 2+2 there were 2 relays wired in the engine bay
screwed to the inner wheel arch on the driver’s side, ive since tidied
them up and mounted them in proper relay holders, the one is for the
headlight covers using the QSC relay and the other is / was always
wired direct to the battery, ever since ive had the car the battery
has drained over a few days and ive traced this down to this relay
under the bonnet, with the relay fitted and wired to the battery it
draws about 140ma, with it removed the residual drain in the car is
about 3ma, with this relay removed / main feed to it from the battery
removed the car won’t start, there’s no click or anything from the
starter which is why I assumed this was the relay you mention which is
part 47 in the manual (great detective work there mate) though with
this relay removed the rest of the car operates as normal, everything
still works including the radio lights wipers etc. hence why I thought
it was a starter relay, I can only assume this is an addition by a
previous owner so all I need to do (I assume) is power it from a
switched feed instead of permanent live,
Out of interest do you know which is the actual relay inside the car
that is # 47?, providing this is still there and it is switched I may
try to draw power from this, I can only assume a previous keeper has
tried to take the strain off the key switch by putting a relay in the
circuit?
I still don’t fancy running wires back through the bulkhead as it’s a
bit tight, I may consider tapping into the ignition coil / fuel
splendid if I have no other option.
Any help much appreciated
On May 20, 5:02 pm, Jim Hearne<[email protected]> wrote:
Another thought, are you talking about the ignition (not starter) relay,
part 47 on Haynes diagram, at least in the version i have.
This relay doesn't have anything to do with the starter, what it does is
remove some of the load of the ignition switched circuits from the
ignition switch.
The ignition switch supplys power to terminal 86 (from the unfused side
of fuse 8) of the relay and the relay contacts switch battery power
through to the output on pin 87.
It supplys power to things like the heater motor, wipers etc.
This relay is fitted in the fusebox not the engine bay so i'm not sure
how your comments about feeding another wire through the bulkhead relate
to this.
Jim
On 20/05/2012 16:41, jin wrote:
hi all
ive traced my battery drain down to a permanent live starter relay
where pin # 86 is wired to the battery directly, acording to the Heinz
manual pin # 86 should be wired to fuse # 8 and the ignition switch so
this has lead me to believe that this pin should be switched,
disconecting it certianly stops the battery drain
keen to keep my car logical id like to wire pin # 86 back to fuse # 8
but without the hassle of puttinga wire through the bulkhead to the
fuse box,
so my question is, what other switched items are there, preferably in
the engine bay that also power off fuse #8?
ill then feed into this to power my starter relay as ford intended
cheers
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