I guess im trying recreate the 3 positions on the ignition barrel.
-Power
-Power for accessories (headunit etc)
-Ignition
This way I can kill the engine but still have power to the dash. This is how Ive wired it up, but unfortunatly the battery died so Ill have to charge it ready for the weekend see if it works.
The third switch normally on the ignition barrel is nothing to do with the ECU, which it looks like your picture shows. This position merely disconnects power to things like radio player WHEN cranking engine over only. In your scenario I wouldn't bother with that particular feature and just wire things like ECU feed to all other switched components.
Right, this has got serious now - I've got the old haynes wiring diagram out.
An ignition barrel has four wires:
Red - 4mm - Positive supply from battery.
Black - 4mm - To ECU switched positive supply (and instruments)
Black - 2.5mm - The switched supply to things like radio player, blower etc.
Black/Red - 2.5mm- To starter motor.
If I was replacing with switches I would join the 2.5mm and 4mm blacks together. If your battery is weak one day just remember not to have the blower on or readio on when cranking.
On your diagram above your black wire going up from the first switch should go to your ECU + instruments, the thin one goes to the radio / blower.
Iain
Last edited by Clean 2.0 nova; 28-08-08 at 08:32 PM.
Thats cleared up a few grey areas for me Iain. Thanks for your time, ill let you know if it worked at the weekend when the battery is charged.
no problems, if you have any more probs just ask.
weve allready tried it that way with ecu line and ignition together, dont get any diagnostics from the dash light as it all turns off at once.
to what someone mentioned before with haynes manual, ive done an updated diagram corresponding to that, all thats left is the ecu feed, not sure about. where should it go and should it have 12 volts in stead of the current 3.5 ?
Last edited by jimbob-mcgrew; 29-08-08 at 03:17 PM.
I tired it but as i said the battery was flat so it wouldnt startweve allready tried it that way with ecu line and ignition together, dont get any diagnostics from the dash light as it all turns off at once.
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