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Has anyone added hazard flashers to a 4A?


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Exactly the same circuit as mine above, just using a different switch type. 

Bob

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3 minutes ago, Tr4aJim said:

What type switch did you use, pull/push?

The picture is in Andrew's link on the first page of the thread.  

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Folks, here is another wiring diagram for adding Hazard flashers to my 4A (using LED indicators). The last one I sent was based on using TR250 components and adding a second flasher unit. However this one is based on Bob’s and Drewmotty’s diagrams that utilize the single flasher already installed for the indicators.

First let me give a big tip of the hat to Bob for patiently answering my questions!

Initially I am going to use the same type 3PDT On/On toggle switch Bob used, that I sourced locally. It’s least expensive and will be easier for the initial install. Once I get it all working, I’ll probably switch to the Hazard pull switch that Drewmotty used (I found one on US eBay).

The LED compatible flasher I'm currently using is a 3 pin (P, B, L) unit made by “Flosser” (1621003). It does not have a separate ground wire. However, I also have a 3 pin (P, B, L) flasher unit made by “CEC” (EF-33RL/24414), that does have a separate ground wire. It should work for Hazards too, as it also works with my LED indicators.

Please look over the diagram and give feedback. New wiring/components are in red.

Again thanks to all who responded, you guys are a great resource!!

Jim

IMG_2269.jpeg

IMG_1331.jpeg

IMG_2265.jpeg

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Ahh, 4/5 down to L, thanks!

I ordered the 3PDT ON/ON toggle switch, so as soon as it arrives I’ll get to work.

Jim

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Just now, Tr4aJim said:

Ahh, 4/5 down to L, thanks!

Also disconnected the green wire from the voltage stabiliser to the flasher. 

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Again, nearly !! By taking the supply direct from the battery (via a fuse) the current does not pass through the ammeter. It would be more conventional to take that feed from the non battery side of the ammeter.  Also (I missed this last time) The wiring to the ignition switch terminals was wrong. see below:

Jim.jpg.3d970748c907643f80b6a4ae4b002733.jpg

Bob

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Thanks Bob! So third times the charm?

BTW - If you recall I made that same “12v source direct from the battery” mistake with my headlight relay config, and that you guys brought it to my attention. I relocated that to the 12v terminal on the ignition switch as well. 
 

So as a review, here’s what I currently (no pun intended) have connected to the ignition switch:

12v terminal - Alternator & Ammeter, feed to Headlight Relays, Horn

Ign terminal - Alternator warning light, Coil/Distributor, feed (white wire) to fuse box, then (green wire) to an Electric Fuel Pump, (green wire) to the Voltage Stabilizer, then on to the new hazard switch

Acc terminal - Headlight switch (DRL mod to guarantee headlights are off when the engine is off)

Once I get the ok from you guys on the hazard wiring, I’ll create a combined diagram of all these mods I’ve made.

Jim

TR4A_hazard_wiring_single_flasher_5_31_2024.jpeg

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2 hours ago, Tr4aJim said:

Thanks Bob! So third times the charm?

BTW - If you recall I made that same “12v source direct from the battery” mistake with my headlight relay config, and that you guys brought it to my attention. I relocated that to the 12v terminal on the ignition switch as well. 
 

So as a review, here’s what I currently (no pun intended) have connected to the ignition switch:

12v terminal - Alternator & Ammeter, feed to Headlight Relays, Horn, & fused feed to Hazard switch

Ign terminal - Alternator warning light, Coil/Distributor, feed (white wire) to fuse box, then (green wire) to an Electric Fuel Pump, (green wire) to the Voltage Stabilizer, then on to the new hazard switch

Acc terminal - Headlight switch (DRL mod to guarantee headlights are off when the engine is off) I would have connected this via a relay to avoid full headlamp current being pulled through ignition switch

Once I get the ok from you guys on the hazard wiring, I’ll create a combined diagram of all these mods I’ve made.

Jim

TR4A_hazard_wiring_single_flasher_5_31_2024.jpeg

Comments in red above

Bob

Edited by Lebro
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I used the SBF300 unit. As a system worked well. Stripped it down and fitted into the dash.

Some years earlier I purchased a replacement wooden RHD dashboard at Stoneleigh for my rebuild. In my ignorance at that time it was for a 4 not a 4A and had a hole cut for the panel lights Rheostat to the right of the rev counter; not used on the 4A.  I fitted the Push button of the SBF300 their and it all fitted well and looked the part. 

David B

 

  

 

 

 

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You might also find some interesting comments on this much older post and its own links or this one ( am getting strange duplicates of links so hope that works.


As posted in another link I purchased a system from eBay https://www.ebay.co.uk/itm/235022478156?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=gnvCGhCvRzm&sssrc=4429486&ssuid=4URzF6V3RUK&var=&widget_ver=artemis&media=COPY 

it’s basically a switch, relay and two diodes, pre-wired.


Paul

Edited by PaulAnderson
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Posted (edited)

Well folks……………………

I HAVE HAZARD FLASHERS!

I basically used Bobs wiring schematic (as well as pestering him with a ton of questions), and using a 9 pin 3PDT On/On switch. With the switch on one position, and the ignition on, I get normal indicators. With the switch in the other position, and the ignition off or on, I get hazards. The configuration utilizes the single LED compatible flasher I have been using for the indicators. The indicator light on the dash also works with the hazards. 
 

The wires are all over the place at the moment, as I wanted to test things before finalizing the wire runs, but before I tidy things up, I’m  going to try and swap in the same 7 pin Ferguson Tractor hazard switch that Andrew used. I’m thinking of mounting that in place of the dash light rheostat, which I never use. TBD

Once everything is finalized, I will post a new wiring diagram, in case others want to go down this road.

Anyway, thanks to all of you for your help and suggestions, and a huge tip of the cap to Bob.

cheers

Jim

Edited by Tr4aJim
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You sound pleased Jim - and rightly so. :D

Well done. 

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Here’s an update -

With Andrew’s help I succeeded in swapping in the 7 pin Ferguson hazard switch! A nice feature of this switch is the knob lights up in hazard mode.
I was hoping to mount it in place of the dash light rheostat (which I never use anymore). However the Ferguson switch is just a little too big to fit in the plinth. So I’m going to make a mounting bracket for it, and mount it just to the driver side of the plinth.

I will make a second “final” wiring diagram based on the Ferguson switch, and a “final” diagram based on the 3PDT switch, and post them both here to close out this thread. Stay tuned.

Jim

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Folks here are my latest wiring diagrams- one with the 3PDT switch, and one with the Ferguson hazard switch.

cheers

Jim

TR4A_hazard_wiring_3PDT_hazard_6_11_24.jpeg

TR4A_hazard_wiring_Ferguson_hazard_6_11_24.jpeg

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