please help me identify these electrical things...

[chester rides again]

ok, I'm being a bit lazy here, but I'm trying to track down a widespread electrical problem - lots of things aren't working, such as lights, turnsignals, electrical fuel pump... it's getting cold up here and i need to get this truck back on the road.


https://mail.google.com/mail/?ui=2&ik=5997813e69&view=att&th=133e7a935c427e7a&attid=0.1&disp=thd&zw (https://mail.google.com/mail/?ui=2&ik=5997813e69&view=att&th=133e7a935c427e7a&attid=0.1&disp=inline&zw)
part 1 - inside engine bay, on top of bulkhead

https://mail.google.com/mail/?ui=2&ik=5997813e69&view=att&th=133e7aa2f2f5a970&attid=0.1&disp=thd&zw (https://mail.google.com/mail/?ui=2&ik=5997813e69&view=att&th=133e7aa2f2f5a970&attid=0.1&disp=inline&zw)
part 2 behind insturment panel, against bulkhead

https://mail.google.com/mail/?ui=2&ik=5997813e69&view=att&th=133e7ad243597b3c&attid=0.1&disp=thd&zw (https://mail.google.com/mail/?ui=2&ik=5997813e69&view=att&th=133e7ad243597b3c&attid=0.1&disp=inline&zw)
part 3 - pretty sure it's the regulator box - located inside engine compartment down low against bulkhead

and lastly... does anyone have any suggestions about cleaning this mess up?
https://mail.google.com/mail/?ui=2&ik=5997813e69&view=att&th=133e7ab40daf9851&attid=0.1&disp=thd&zw (https://mail.google.com/mail/?ui=2&ik=5997813e69&view=att&th=133e7ab40daf9851&attid=0.1&disp=inline&zw)

Happy Holidays!

[Partsman]

We could take some guesses, but pics would help us nail down exactly what you need identified

[chester rides again]

5595

5596

5597

did that work?

[SafeAirOne]

Top: Non-factory relay. What it operates, who knows...

Middle: Looks like a voltage stabilizer for the fuel and temp gauges, though my SIII only has a dark green wire (12v in) and a light green wire (10-ish volts average out), there could be 2 separate light greens, one to each individual gauge.

Bottom--No idea, other than it isn't on SIII's. It LOOKS like a main power distribution point for the vehicle, though.

[chester rides again]

the second and third pics are sideways... pretty sure the last one is the voltage regulator (according to the green bible) and the second has a dark and a light green wire on one clip and a light green on the other - both go to the fuel and temp guage (makes sense now!!!)

as for the first one - if it's a relay - what does that do? i pryed it open and it looks like a spool of copper with a bar around it - seems that when electricity passes thru the coil it would pull the bar down and create a circuit... guess I need to clean off the oil and dirt and figure out where the wires go... weird part as it's made in Italy and it's on an English truck!

[Apis Mellifera]

3 is the starter solenoid. One of the heavy wires should go to the positive battery terminal and the other to the starter.

[SafeAirOne]

as for the first one - if it's a relay - what does that do? i pryed it open and it looks like a spool of copper with a bar around it - seems that when electricity passes thru the coil it would pull the bar down and create a circuit...


That's pretty much the definition of a relay--In this case, it's 2 separate circuits. One is most likely controlled by a switch in the cab (probably a non-standard switch installed by a PO) and when energized, closes the second circuit, sending power to whatever accessory is being controlled. Usually, it's a high-draw item, like auxillary lights for example.

From what I can see of the wires, none of them look like standard British automotive color codes, so you'll have to trace them down.

[chester rides again]

so having identified 1 random relay (looks to go to the rear of the truck ), 1 voltage stabilizer and one starter solenoid... I'm still looking for the regulator box, which seems to connect a bunch of things together. Could someone post a picture of what this box looks like?

Do I even need this box? I mean is it possible when the PO rewired the truck in the early 90's he skipped over this unit? The truck has a Delco alternator installed, and some searching on the web has show that the regulator might not even exist in the truck anymore.

my issue is this...

The truck sat for several months this summer ( I know, what a shame with a soft top and all) and pretty much everything electrical is either not working or so completely unreliable that I can't be out in the evening. I'm trying to figure out the rats nest behind the guage panel and work backwards. I can't figure out what this regulator box looks like based on the wiring diagram on page 10-N of the Green Bible. Heck, the more I look at the wires, it looks like very little matches' up...

[disco2hse]

Maybe the relay controlled a dual battery system for a winch? Anyway, now that you've pried it open it is probably trash. I have one that is similar I use to provide a 12V feed to my ignition. The relay feed is wired from the ignition switch so that when the ignition key is on the relay closes the circuit between the battery and the coil. Just to give you an idea of how one might be used. You will see also that one of the wires doubles back onto the mounting screw to provide an earth. Four wires, one feed for the relay, on to earth it and I/O wires for each side of the relay.

If it has been rewired, I would not bother with trying to fathom it against the Haynes' wiring diagrams. You have no guarantee that it is correct.

What are the issues you are having? Is it that lights are not working, battery going dead, battery not charging, gauges not working or reading incorrectly?

In the end, if has been rewired, you will have to get in there with your ammeter and voltmeter and see where currents are going, and if resistances are what they should be.

Ain't an easy job when faced with a bird's nest, I know.

[SafeAirOne]

Delco alternators have the voltage regulators built-in, so it's no surprise that you can't find an external factory regulator--it's redundant.

I'd expect the large wire to come off the aternator and go directly to the large post on the starter. There's probably a small wire going to the charge warning lamp and another wire going from the remaining terminal on the alternator to the large post on the alternator or, if the PO did it correctly, to the main power distribution point on the Rover.