90truckcab

Well-Known Member

• May 7, 2009

• #21

is it wired neg earth or pos earth ?
Your glow plugs are wired in whats called a PARALLEL circuit ( all wired in a line).
This means they are wired using the original resistor on the bulkhead
there should be no earth as the glowplugs are self earthing , eg NO END CONNECTION TO THE BLOCK ITS SELF FROM NO 4 PLUG
you can get rid of the resistors too,

 

90truckcab

Well-Known Member

• May 7, 2009

• #22

as for a new bulk head? your better off getting one from the scrappy and making any good repairs where needed

 

90truckcab

Well-Known Member

• May 7, 2009

• #23

just been passed on this contact details for a bulk head if any use to you?

galvanised restored series 1 2 and 3 bulkheads to original spec and we have fantastic references my contact numbers are -1264333021 and 07968 041318 you can email me on swann@equinoxe.freeserve.co.uk

 

B

BigUnZ

New Member

• May 8, 2009

• #24

yeah I get it that they should be connected parallel but the connection to the engine block is what amazes me most...

 

90truckcab

Well-Known Member

• May 8, 2009

• #25

have you disconnected it ? what EXACTLY is it connected to the top of the conductors for the glowplugs or the earth of the glow plugs? they should earth them selves

 

B

BigUnZ

New Member

• May 8, 2009

• #26

it appears like he's connected earth and + charge together, from the bulkhead and over to the engine block. I'm going to work some more in the car tomorrow, got all day so gonna take a notebook and log everything down cause it appears like the guy didn't know what he was doing. Have to check where these wires are coming from inside the car but still don't understand why he connected the all 4 glow plugs to the engine block.

I'll put in an update tomorrow, hopefully some photos as well

 

90truckcab

Well-Known Member

• May 8, 2009

• #27

if the earth and live apear together, check if they go thru a resistor?

post a few pics of yer findings tomorrow, make it a bit clearer what the prob is,

 

Davec

New Member

• May 9, 2009

• #28

90truckcab said:

is it wired neg earth or pos earth ?
Your glow plugs are wired in whats called a PARALLEL circuit ( all wired in a line).
This means they are wired using the original resistor on the bulkhead
there should be no earth as the glowplugs are self earthing , eg NO END CONNECTION TO THE BLOCK ITS SELF FROM NO 4 PLUG
you can get rid of the resistors too,

Click to expand...

No it's not, it's what's called SERIES because the power passes though each heaterplug in turn. It was how the plugs were wired up when it left the factory. imcluding the last one to earth. There should be a coiled resirter in the bracket on the bilkhead. However tjhere is an aftermarket conversion that uses bifferent plugs wired in parraell, and , I think, does away with the resistor. It is common for owners not to know what the prevois owner has done, and so gwet in a right mess thrying to "put right" their mistakes!

 

B

BigUnZ

New Member

• May 9, 2009

• #29

so the last wire to the engine block is necessary?

 

B

BigUnZ

New Member

• May 9, 2009

• #30

The earth wire goes down to the first glow plug and then they are all four looped together and the last plug is connected to the engine block. Is this really the way they came out of the factory? Do you really have to connect the last one to the engine block?

 

Davec

New Member

• May 9, 2009

• #31

Nice photo, doesn't show the bits we need to see.
Is there a coiled resistor joining the two terminals within the bracket shown?
Are the two wires going to and from each heater plug in contact with each other or either side of a postulation (?) insulator?

 

Davec

New Member

• May 9, 2009

• #32

Just been back to look at your first photos ( a slow task with dial up) and it does look as if you heater plugs are wired up wrongly, but not in the manor you thought. To be sure you need to take a plug out and look at the end of it. Does it have a coil of wire (or traces where it has burnt out)?

 

B

BigUnZ

New Member

• May 9, 2009

• #33

All the plugs look ok and with the coils undamaged. Haven't tested them yet but they look ok.

I've removed all the plugs and the connections for them (took them in for a bit of a clean up and some anti-seize compound)