Hi does anybody know how to locate the wire going to the battery charge light from the Alternator.
Thanks
Stu
Thanks
Stu
General Alternator Battery Charge Light
- Thread starter volxstu
- Start date
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General Alternator Battery Charge Light
There's no direct connection between the alternator and the warning light.
The D+ wire from the back of the alternator goes via 1 or 2 connectors to the Body Computer. The warning light is controlled on the CAN BUS from the BC.
Dave.
The D+ wire from the back of the alternator goes via 1 or 2 connectors to the Body Computer. The warning light is controlled on the CAN BUS from the BC.
Dave.
OP
OP
Ah damn just trying to find power for the split charge relay.
OP
OP
So does nobody know of anywhere i can splice from.
It should work if you connect a wire from the split charge relay operating coil (terminal 85 or 86) directly to the alternator D+ (NOT the B+) terminal. If the back of the alternator is difficult to get to, you could connect to one of the wiring connectors between the alternator and the BC.
I cant remember what engine you've got Stu, let me know and I'll try to get you a diagram of where the connector(s) is/are.
Dave.
I cant remember what engine you've got Stu, let me know and I'll try to get you a diagram of where the connector(s) is/are.
Dave.
Have a look here
http://www.marcleleisure.co.uk/Sund001/SplitCharge01.htm
http://www.marcleleisure.co.uk/Sund001/SplitCharge01.htm
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That's why I said "NOT the B+" Decks.
Surely all the split charge relay needs is an "engine running" or "alternator charging" signal and that would be available at the D+ terminal of the alternator no matter what system it's fitted to.
Dave.
Surely all the split charge relay needs is an "engine running" or "alternator charging" signal and that would be available at the D+ terminal of the alternator no matter what system it's fitted to.
Dave.
Yes sorry, needed to get my glasses on
wotnowarninglight
Member
I have recently run 5m of 3.0mm wire from the battery, by fitting a ring treminal to the existing battery + bolt and put the nut back over it, into the boot of my JTD for a splitcharge (smart) relay and added a 12S socket to power the lights, fridge & charge the battery on the caravan.
For the relay and wiring kit check out Towsure's W28 Kit, which is what I fitted, figuring that messing with the Alternator wiring would be bad news on a Stilo!
Worst bit... getting the cable through the bulkhead :bang:
OP
OP
I have recently run 5m of 3.0mm wire from the battery, by fitting a ring treminal to the existing battery + bolt and put the nut back over it, into the boot of my JTD for a splitcharge (smart) relay and added a 12S socket to power the lights, fridge & charge the battery on the caravan.
For the relay and wiring kit check out Towsure's W28 Kit, which is what I fitted, figuring that messing with the Alternator wiring would be bad news on a Stilo!
Worst bit... getting the cable through the bulkhead :bang:
That is permanent live not split charge, there is nothing to tell the realay that the ignition is running.
I already have my O gauge power cable going through the bulk head so that bit is easy lol
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OP
OP
Its the 1.6 Dave and i would like to connect it as close to where i am going to put the relay as possible although i havnt decided where it is going yet lol.
A diagram would be great thanks.
I've just looked at the Towsure site as suggested by wotnowarninglight above.
http://www.towsure.com/product/2973-Self-Switching_Combination_Relay_Wiring_Kit
Unfortunately they don't show a wiring diagram or any tech info on the W28 relay but if it does what they say, it could be an easy and fairly cheap option for you.
I'll get the 1.6 diagrams for you anyway.
Dave.
http://www.towsure.com/product/2973-Self-Switching_Combination_Relay_Wiring_Kit
Unfortunately they don't show a wiring diagram or any tech info on the W28 relay but if it does what they say, it could be an easy and fairly cheap option for you.
I'll get the 1.6 diagrams for you anyway.
Dave.
This is the wiring and component location diagrams for the charging and starting circuits from eLEARN.
A10= Alternator - D7= Inline Connector (only fitted on 1.6 engine) - D4= Inline Connector - M1= Body Computer.
Brown wire (M= marrone= brown) goes from terminal D+ on the alternator to pin 1 of inline connector D7 then to pin A6 of the D4 inline connector then to pin 19 of the BC. It's probably a very thin brown wire as it only needs to carry a very low current.
The location diagrams are never very accurate but I would guess that the D7 connector is close to the back of the alternator and the D4 connector (as all Stilo owners know???) is under the engine fuse box.
Dave.
A10= Alternator - D7= Inline Connector (only fitted on 1.6 engine) - D4= Inline Connector - M1= Body Computer.
Brown wire (M= marrone= brown) goes from terminal D+ on the alternator to pin 1 of inline connector D7 then to pin A6 of the D4 inline connector then to pin 19 of the BC. It's probably a very thin brown wire as it only needs to carry a very low current.
The location diagrams are never very accurate but I would guess that the D7 connector is close to the back of the alternator and the D4 connector (as all Stilo owners know???) is under the engine fuse box.
Dave.
Attachments
OP
OP
http://www.caraudiodirect.co.uk/value-split-charge-p-4394.html
I already bought this as i have never done a split charge before and it comes with everything i need so i thought it worth the extra few £ to save me a fair bit of hassle.
Also i need 180amp at an absolute minimum so this one will do for now.
I already bought this as i have never done a split charge before and it comes with everything i need so i thought it worth the extra few £ to save me a fair bit of hassle.
Also i need 180amp at an absolute minimum so this one will do for now.
OP
OP
So i would be better off using the D4 to take to Terminal 86 on my Relay.
So does anybody have a picture to show me where this D4 connector is or is it the thing that looks like a Can-bus connector underneath the battery.
Also i have always been a little confused as to the alternator main power going to terminal 30 do i connect this via the battery positive.
Thanks guys.
There are two multiway connectors round the back of the battery, beneath the fuse box. They both look the same and have purple locking connectors, the one you are interested in has loads of wires with most of the pins populated, the other only has a few in comparison.
The D4 is the source of lots of problems, so search around for D4 connector, there should be loads of posts about it. - I had to clean mine this weekend to get ridd of airbag issues.
Dan
It doesn't matter if you connect the main power to relay terminal 30 or 87 (not 87a, 87b or 87c if present). Terminals 30 and 87 are are just the switch terminals, it's only convention that dictates the power supply goes to 30 and the consumer goes to 87.
The first diagram in the link that Decks posted shows the wiring.
Dave.
The first diagram in the link that Decks posted shows the wiring.
Dave.
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OP
OP
Ahh sorry i am just really bad with electrical diagrams so the red wire in the diagram the join from the battery and the relay are infact 2 completwely different wires. 1 alt-b+ 1 and alt-relay+.
OP
OP
If im already adding a bigger wire from the alt to the batt do i need to still connect the relay to the alt rather than the batt.
