Indicators

[Bill_qaz]

My car has DB10 unit and a conventional lucas 3 pin flasher unit next to it.
Front indicators/ side light and separate indicators at rear, warning light on stalk .
Could some one please post a wiring diagram or link.
The indicators have stopped working and just a click from under bonnet (DB10?) when left or right selected. Handy to have diagram before taking the multi meter to it.
Thanks

[Bill_qaz]

Found link https://www.morrisminorforum.com/phile/ ... fied-c.jpg but does anyone have a better quality image as it blurs when enlarges and I can't read detail such as terminal numbers.

[ManyMinors]

The most likely fault - if the indicators have failed on BOTH sides - is the 3 pin flasher unit. Unless you have a poor connection somewhere which is always a possibility on old vehicles. As you may realise: If your car has separate rear flashers then they have been retro fitted as the whole point of the DB10 unit was to convert the brake light into a flashing indicator, eliminating the need for another lamp, so you will not find a wiring diagram for exactly the set-up you describe

Wiring diagrams are to be found within the correct original "Driver's Handbook" which was supplied with each car when new and also the "Workshop Manual" which was a popular reference. Copies are available from Minor specialists and elsewhere still. They are a worthwhile purchase.

[Bill_qaz]

Got them working dirty connection on feed to flasher unit. Flash rste seems quick compared to modern car though all working.
Noticed front and rear on same terminal on one side and separate on the other on the other side of the DB10 unit.The empty terminal has no output. As I have separate rear indicators from brake lights can I run front and rear off one output each terminal 2 and 6 as stop light cut out not needed.

[geoberni]

Got them working dirty connection on feed to flasher unit. Flash rste seems quick compared to modern car though all working.
Noticed front and rear on same terminal on one side and separate on the other on the other side of the DB10 unit.The empty terminal has no output. As I have separate rear indicators from brake lights can I run front and rear off one output each terminal 2 and 6 as stop light cut out not needed.

Bill
see this old post of mine, it's how I wired Trafficators to work with the DB10 system, but it shows how the DB10 should be wired.
viewtopic.php?f=11&t=72067&hilit=DB10#p654490

[Bill_qaz]

Got them working dirty connection on feed to flasher unit. Flash rste seems quick compared to modern car though all working.
Noticed front and rear on same terminal on one side and separate on the other on the other side of the DB10 unit.The empty terminal has no output. As I have separate rear indicators from brake lights can I run front and rear off one output each terminal 2 and 6 as stop light cut out not needed.

Bill
see this old post of mine, it's how I wired Trafficators to work with the DB10 system, but it shows how the DB10 should be wired.

No link? to your post I have the diagram of DB10 , my question is can I run front and rear right off terminal 6 and left hand front and rear off terminal 2, stop light cut out not required.

[geoberni]

No link? to your post I have the diagram of DB10 , my question is can I run front and rear right off terminal 6 and left hand front and rear off terminal 2, stop light cut out not required.

Sorry, don't know what happened there, I thought it had added.
Now included it where I thought I had...

Yes, if you've removed the Stop Light function and it's solely indicators the Relay is operating.
Here's a link that shows how the DB10 operates: https://mgaguru.com/mgtech/electric/et105a.htm

[Bill_qaz]

All sorted thanks for the info, indicators working and 4 way flasher system wired directly to DB10 terminals for L+R, so only needs two wires. Bought new flasher can as a standby to keep in car.
Reverse light and fog light replaced and two new metal toggle switches replacing plastic ones.

[POMMReg]

Can you pm chassis number, presume you found it?

See if my guesswork was accurate or utter rubbish.

Thanks

[les]

Guesswork ?That doesn’t bode well for the booklet !

[POMMReg]

Guesswork ?That doesn’t bode well for the booklet !

Les, I did add deduced using old info.

Laptop switches off after 5mins, not much help!

[jaekl]

How did you wire the four way flasher into the DB10? Depending on how you did it, power can back feed into the ignition circuits and the engine can run on each flash. My experience is once the ignition issue is resolve, you'll find that the flashers will not work indefinitely. Either the flasher unit overheats or the DB10 overheats and the lights no longer flash. Once cooled though everything is fine again.

[geoberni]

How did you wire the four way flasher into the DB10?
Depending on how you did it, power can back feed into the ignition circuits and the engine can run on each flash.
My experience is once the ignition issue is resolve, you'll find that the flashers will not work indefinitely.
Either the flasher unit overheats or the DB10 overheats and the lights no longer flash.
Once cooled though everything is fine again.

I assume your comment is directed to Bill, but perhaps not.
You've certainly lost me...
How would connecting Hazard Lights get anywhere near the 'Ign Circuits' as you've used the term?
What's the connection between Hazard Lights and an 'Ignition Issue'?
What issue?

[jaekl]

Yes, to Bill who added four way flashers via the DB10. Non-switch power must be supplied to the flasher switch which in turn will activate the solenoids in the DB10. The now working rear turn signals will also cause 12v to be present at the brake light switch. Press the brakes and the ignition switched circuits now have 12 volts. Moving the wire to the brake switch to the horn and interior light fuse solves the problem. Depending on how the rest of it is wired, the power to the flasher unit needs to be moved too.

[Bill_qaz]

I haven't a clue what you mean. It's a 4 way flasher kit with its own integrated flasher unit and connected to the battery via inline fuse.. The outputs go to left and right indicators, connecting them at the DB10 outputs is the same as connecting them to the indicators but closer.You can't activate a solenoid or relay by powering its output terminal Even if it could back feed the ignition, if that's what you mean, how can it start the engine without engaging the starter. If it was an issue I would simply fit diodes but it isn't.

[geoberni]

Yes, to Bill who added four way flashers via the DB10. Non-switch power must be supplied to the flasher switch which in turn will activate the solenoids in the DB10. The now working rear turn signals will also cause 12v to be present at the brake light switch. Press the brakes and the ignition switched circuits now have 12 volts. Moving the wire to the brake switch to the horn and interior light fuse solves the problem. Depending on how the rest of it is wired, the power to the flasher unit needs to be moved too.

What?
I don't get the bit about

Non-switch power must be supplied to the flasher switch which in turn will activate the solenoids in the DB10.

Why are you activating the DB10?
If you're installing an 'emergency system' i.e. Hazard Switch, you don't complicate it by adding another point of potential failure i.e. requiring the DB10 to operate.
Bill already explained his Indicators were separate and just coming from Terminals 6 & 2.

Hazard Lights basic.jpg (107.61 KiB) Viewed 1590 times

I'll conceded that if you have the standard DB10 system, have the Hazards switched on and then sit there pressing the brake pedal, it will deliver a pulsed supply to the Coil/Fuel Pump, but then you shouldn't be sat in the car pressing the Brake.
Instead of all that moving wires around that you suggest, just put a diode on the connection to T5.
Then it can't feed back to the Fuse via the Brake switch.

I guess if you wanted to sit there with the Ign On, press the brake pedal, then operate the Hazards switch, the Brake Lights wouldn't flash... I might try that one day to see what happens, but quite honestly, if the Hazards are on, I am not going to be sat in the car playing with the controls.
Whatever I'm driving, I don't subscribe to the theory of using them as 'park anywhere' lights.

[Bill_qaz]

Whatever I'm driving, I don't subscribe to the theory of using them as 'park anywhere' lights.


Me too and I would switch off the ignition as I have broken down or got a puncture, I wouldn't be sat in the car pressing the brakes or playing with the indicators.
It's not using the OE flasher unit or the DB10 to operate the hazard flashers and my brake lights are not combined flashers as I have separate rear indicators, so I don't understand jaeki what you mean. I am happy how it operates so we will just agree to disagree

[jaekl]

When you say your car has a DB10 relay, that indicates it has combined stop and turn signal bulbs. When you say "4 way flasher system wired directly to DB10 terminals for L+R, so only needs two wires.", indicates that the two wires powered the solenoids in the DB10 which completes the circuit for the flasher unit and thus would need a power source to make the lights work. Naturally you want the four way to work without the ignition on, so some re-wiring is required. Hoping that a thief won't find out that lightly depressing the brake pedal would allow operation or they won't bother with a disabled vehicle is not that wise.

But never mind all that because now you state that you have a key start Minor with stock tail lights with separate turn signal bulbs. Why is there a DB10 relay on your Minor?

I agree with separate stop and turn signals bulbs, the brake switch does not come into play, but again why is there a DB10 relay?

[Bill_qaz]

When you say your car has a DB10 relay, that indicates it has combined stop and turn signal bulbs. When you say "4 way flasher system wired directly to DB10 terminals for L+R, so only needs two wires.", indicates that the two wires powered the solenoids in the DB10 which completes the circuit for the flasher unit and thus would need a power source to make the lights work. Naturally you want the four way to work without the ignition on, so some re-wiring is required. Hoping that a thief won't find out that lightly depressing the brake pedal would allow operation or they won't bother with a disabled vehicle is not that wise.

But never mind all that because now you state that you have a key start Minor with stock tail lights with separate turn signal bulbs. Why is there a DB10 relay on your Minor?

I agree with separate stop and turn signals bulbs, the brake switch does not come into play, but again why is there a DB10 relay?

I never mentioned key start it's pull start
I never mentioned combined rear lights
I did say wired to DB10 outputs not inputs so not using solenoids
Why does it have a DB10 because it works the indicators
No rewiring is required as its an independent retro fit kit, the only connection to OE is to the indicators from the kits own flasher unit.

I did say let's just agree to disagree so why continue as you are making assumptions based on your interpretation of my cars wiring. So let's just end this discussion. Thanks

[neilmorey]

I know you've fixed the issue now but I've found Holden's website to have useful wiring diagrams in the past, not Morris Minor specific.

https://www.holden.co.uk/wiring_diagrams