|
|
| Author |
Message |
Ray White
Joined: 02 Dec 2014
Posts: 7589
Location: Derby
|
 Posted: Tue Jul 14, 2026 6:38 pm Post subject: Flasher unit test. |
 |
|
I may be getting this wrong; I don't know.
I have the positive earth electronic flasher unit on the bench for testing.
The battery reads 12v. I have connected it to the terminals on the unit. Load (- ) and earth (+ ) and it doesn't click.
Should it? Or does it need to be connected to the indicator lights to work? |
|
| Back to top |
|
 |
ukdave2002
Joined: 23 Nov 2007
Posts: 4360
Location: South Cheshire
|
| Posted: Tue Jul 14, 2026 8:35 pm Post subject: Re: Flasher unit test. |
|
|
| Ray White wrote: | The battery reads 12v. I have connected it to the terminals on the unit. Load (- ) and earth (+ ) and it doesn't click.
Should it? Or does it need to be connected to the indicator lights to work? |
Why are you connecting the battery to the Load terminal? |
|
| Back to top |
|
|
Ray White
Joined: 02 Dec 2014
Posts: 7589
Location: Derby
|
| Posted: Tue Jul 14, 2026 9:34 pm Post subject: Re: Flasher unit test. |
|
|
| ukdave2002 wrote: | | Ray White wrote: | The battery reads 12v. I have connected it to the terminals on the unit. Load (- ) and earth (+ ) and it doesn't click.
Should it? Or does it need to be connected to the indicator lights to work? |
Why are you connecting the battery to the Load terminal? |
Sorry, my mistake. I should have said supply not load.
It is a positive earth electronic flasher unit.
I have connected the 12v supply to the X terminal and the + earth to the earth wire...and nothing happens.
The indicators had been working fine and I thought I had done everything ...then it went pear shaped again. 
. |
|
| Back to top |
|
|
ukdave2002
Joined: 23 Nov 2007
Posts: 4360
Location: South Cheshire
|
| Posted: Wed Jul 15, 2026 9:08 am Post subject: |
|
|
| Does it have load detection ? i.e. if there is no load it doesn't click, be worth sticking a meter or bulb on the output to see if there is any output. |
|
| Back to top |
|
|
Ray White
Joined: 02 Dec 2014
Posts: 7589
Location: Derby
|
| Posted: Wed Jul 15, 2026 9:42 am Post subject: |
|
|
| ukdave2002 wrote: | | Does it have load detection ? i.e. if there is no load it doesn't click, be worth sticking a meter or bulb on the output to see if there is any output. |
Thanks. That is something I can try.
I did wonder if I swapped the amber BA15 bulbs in the rear lamps for classic LEDs it would give the flasher unit an easier life. ? If I have to get another unit I could buy the LEDs at the same time.?
I don't know if they will fit a Lucas 1130 shell?
These electronic flasher units are supposed to be able to handle incandescent bulbs but I am having my doubts.... |
|
| Back to top |
|
|
Ray White
Joined: 02 Dec 2014
Posts: 7589
Location: Derby
|
| Posted: Wed Jul 15, 2026 11:13 am Post subject: |
|
|
With the flasher unit connected to a 12 v battery as before, I set the multimeter to volts. When I touched the load terminal with one probe and earth with the other I observed a 12 volt reading.
So current is passing through the flasher unit but it is not clicking. I am led to understand that the load requirement is only relevant for older thermal switch types...so presumably the failure of this electronic unit to click indicates it is faulty?
'Classic Car LEDs' think it must be faulty and are posting me another one today...
Last edited by Ray White on Wed Jul 15, 2026 12:11 pm; edited 1 time in total |
|
| Back to top |
|
|
ukdave2002
Joined: 23 Nov 2007
Posts: 4360
Location: South Cheshire
|
| Posted: Wed Jul 15, 2026 12:00 pm Post subject: |
|
|
Electronic flashers are more than capable of switching incandescent bulbs and operate independently of load, what lead up to it failing? were there any other faults that occurred at the same time? a short circuit may have ended its life, but I would expect a fuse to have blown if there was a short.
Do you have a schematic of the unit? |
|
| Back to top |
|
|
Ray White
Joined: 02 Dec 2014
Posts: 7589
Location: Derby
|
| Posted: Wed Jul 15, 2026 12:32 pm Post subject: |
|
|
| ukdave2002 wrote: | Electronic flashers are more than capable of switching incandescent bulbs and operate independently of load, what lead up to it failing? were there any other faults that occurred at the same time? a short circuit may have ended its life, but I would expect a fuse to have blown if there was a short.
Do you have a schematic of the unit? |
https://www.classiccarleds.co.uk/products/12v-electronic-indicator-flasher-relay-classic-car-with-oe-click-x-l-p-2-3-pin?variant=8299346853983
Everything was working fine and having finished the petrol low level warning sender/light job, I tempted fate by telling Jean I was "over the line" and the car was ready for the rolling road set up.
. |
|
| Back to top |
|
|
alastairq
Joined: 14 Oct 2016
Posts: 2225
Location: East Yorkshire
|
| Posted: Wed Jul 15, 2026 2:00 pm Post subject: |
|
|
| Quote: | I tempted fate by telling Jean I was "over the line" and the car was ready for the rolling road set up.
. |
Was that said within earshot of the car???
_________________
Dellow Mk2, 1951 built, reg 1952.
Fiat 126 BIS
Cannon special [1996 registered. Built in 1950's]
----------------------------------------------
Ford Pop chassis, Ashley 1172 bodyshell, in pieces. |
|
| Back to top |
|
|
Ray White
Joined: 02 Dec 2014
Posts: 7589
Location: Derby
|
| Posted: Wed Jul 15, 2026 4:20 pm Post subject: |
|
|
| alastairq wrote: | | Quote: | I tempted fate by telling Jean I was "over the line" and the car was ready for the rolling road set up.
. |
Was that said within earshot of the car??? |
I was wrapping the wiring to make it less untidy ...then discovered the main beam is not working!
I can't help but think that someone "up there" doesn't want me to drive it.!
.  |
|
| Back to top |
|
|
Ray White
Joined: 02 Dec 2014
Posts: 7589
Location: Derby
|
| Posted: Sat Jul 18, 2026 2:32 pm Post subject: |
|
|
My new box of 'boot lace' ferrules arrived today.
You get a lot for 5 quid !!
All I need now is a proper crimping tool.
(or carry on soldering!) |
|
| Back to top |
|
|
ukdave2002
Joined: 23 Nov 2007
Posts: 4360
Location: South Cheshire
|
| Posted: Sun Jul 19, 2026 7:35 am Post subject: |
|
|
Get a ratchet crimper, they are only around £10 take seconds to crimp and the result will be more reliable than soldering.
I bought the cheapest ratchet crimper on Amazon and its been fine.
https://tinyurl.com/46mm2we9 |
|
| Back to top |
|
|
Ray White
Joined: 02 Dec 2014
Posts: 7589
Location: Derby
|
| Posted: Sun Jul 19, 2026 8:49 am Post subject: |
|
|
| ukdave2002 wrote: | Get a ratchet crimper, they are only around ?10 take seconds to crimp and the result will be more reliable than soldering.
I bought the cheapest ratchet crimper on Amazon and its been fine.
https://tinyurl.com/46mm2we9 |
That's what I have ordered  .
. |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Profile
Log in to check your private messages
Log in
