Electronic Ignition Wiring question

[PaulW2]

Hi

I am trying to connect an electronic ignition module in an 009 distributer in lieu of points. I have the following question / difficulty.

According to the instructions in the module box the red wire gets connected to the Positive (15 on Bosh Coil) and the black wire is connected to the Minus (1 on Bosch Coil).
With the Ignition wire from start / ignition switch being also connected to positive wire.

According to the Haynes Manuel wiring diagram the Coil should have the Ignition switch connected to its positive terminal (ie as the Electronic Ignition module instructions) and the points/ condeser wire bwing connected to the negative terminal.

In addition there should be a connection from the Coil positive to the auto choke and fuel cut off switch on carb.

So in theory all very straightforward- simply disconnect points /condeser wire and connect the electronic ignition module as instruted!

The problem is my Bus existing wiring aint wired up like the Haynes wiring diagram !

A wire comes from the ignition switch that loops into the fuel cut out on carb then on to the auto choke and then on to the NEGATIVE wire of the coil (NOT POSITIVE?)

The wire from the condenser/ points is connected to the Positive terminal of the coil (not negative).

I should point out that the bus ran fine like this. Is this possible?

Is it a case that with points it does not matter wether they are connected to positive or negative wire as long as it is opposite the connection from the ignition (as they only have one connection terminal)?

Do I simply re wire the coil so that the ignition switch wire goes to the positive terminal then install a loop to the Auto choke and the Fuel cut out, as Haynes Manual wiring diagram? then connect the Electronic ignition as directed?

Is it possible that my coil has the terminals labelled up incorrectly?

Please help as I do not want to burn out the new electronic ignition module if I get the wires round the wrong way.

Thanks

Paul

 

[bluelighttaxidriver]

Hi Paul. I fitted electronic ignition to mine.

Can confirm the connections are as they should be... Red from module to +ve on coil, black to -ve on coil.
+ve from ignition to +ve on coil, then wire from +ve coil to fuel cut off, then to choke...

Best do it properly so you know you have a known base....

Steve.

 

[PaulW2]

The problem I have is that the ignition wire is connected to the negative wire on the coil? and the bus runs with points (points being connected to Positive (15) on Bosch coil.

 

[dubdubz]

if you have a multi meter I would disconnect the cable that runs to the choke and fuel cutoff gadget - and see if you have +12 v there. I would remove the coil from it's position and recheck the terminals [it's a sod to see tbh]

it should be the 15 is + and 1 is - , afaik it won't work the other way around.

the coil should be marked with a + and - aswell as terminal #'s so I would wire it as you believe all things + to 15 and the single [unless you have a revcounter?] wire on the negative.

but wait till someone confirms...I'm struggling to remember which way I have to adjust my cable for the clutch biting point!! :lol:

 

[PaulW2]

It was working (is working!) with the points being connected to the positive (15 teminal) and the ignition wire the negative (1) terminal- I cant understand this at all????

Perhaps I should just get a new coil and start again?

 

[Araon]

it doesnt matter as its a simple primary coil ie a length of wire looped about the secondary and former just as long as the condenser and breaker are on the opposite connector...

that said it makes sense to standardise it so no **** ups in the futureand it removes any possibilities of doubt....

 

[PaulW2]

Araon

Thanks, that explains it all!

That has answered my query- somebody had transposed the wiring on the coil for the point and it makes no difference- all I have to do is reverse them back as they should be and fit the electronic ignition module as the instructions (I think I will sort out bodge loop for fuel cut off and Auto choke at same time).

Many thanks Paul

 

[dubdubz]

aaron beat me to it