Series 2a wiring challenge

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landy1963

Member
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60
Location
Edinburgh
Hi all,
My SIIA(original'63 petrol, converted to 2.25 dsl and later to 2.5 NA) at the time I bought it a dafty loom. When reconditioning the 2.5NA I cut all the wires out. Ordered a loom at autpsparks (great stuff), but they do not have a diagram for mine. They did send the pertol + altenator and Dsl Suffix D. which i can email on request. :)
I'm looking for a diagram (SIIA - diesel 2.5NA) negative earth - containing at the least: starter + solonoid, contolbox, alternator, flashing unit (3connections).
Does anyone had the same challenge?
Thanks for looking
Bas
 
heya,

did some drawing and google, reading etc. attatched a diagram of engine wiring the way I found it. please advice. The collors coding is not yet correct.

Bas
 

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Hi Pal.
Youve obviously spent time doing the drawing, so I'll give you my opinion, the below is not having a go, its constructive criticism from an experienced car basher.

The oil pressure light should have a wire to A4, on one side, and the other side goes to the oil pressure switch on the filter housing.
Your oil temp indicator wants to go to A4, the way you have it, it will no go out when you shut off the engine.
The heater plug wiring is correct, however some ignition switches cannot handle the current for all the heater plugs, make sure your switch can cope with the load, if it will not then you need a relay to switch the plugs.
The line from the alty to terminal A3 should have the ign warning light in it, and go to A4 on the other side of the fuse, you have it directly connected, that will blow the regulator or diode pack.
The fuel cutoff switch just goes from +supply to ground, that will short the battery, if there is a electric fuel pump then this needs to be inline, also it needs to come from A4 so that it shuts down when the ignition is off.
The guage wiring you show probably would work, however you really ought to have a voltage regulator in circuit to keep the guages reading steady, and feed the reg from A4.
Also you have shown the 2 fuses but not connected them, they should feed the respective circuits, A2 would be for all the circuits that work with the ignition off, sidelights, horn etc.
The starter wiring looks correct, except that the two wires going to the horn and sockets should either have fuses inline or go to terminal A2, the latter being better.
In your first post you mentioned 'control box', do you mean the dynamo regulator?, a '63 probably would have a dynamo as original, however being converted several times yours might have an alty, your drawing implies an alty.
Hope this throws some light.
 
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