hazard flasher fault

G

gosnell

New Member
at the last MOT (last year) I had and an advisary that that the hazads were too fast , so I bought a replacement hazard cannister but the hazards are still too fast after the replacement. All 4 indicators are working and are ok at normal left or right position so I am at a bit of a loss, I guess it is an earth fault but as they all work ok under normal position where do you start.


John
 
Hi John,

The flashing frequency of the hazard feature on my Rover has always been much faster that the indicator frequency. As far as I am aware, the Hazard unit contains a relay and a capacitor, so nothing special there in terms of content. You could buy a modern replacement or do you specifically wish to retain the Lucas metal unit?

Ron.
 
with regard to the cannister all I can say is that it came from Winns and is boxed as a hazard unit, it is a round unit with 2 connections, but it is interesting that one of the comments say their hazards run faster is there any body else who can confirm that the hazrds are faster than the normal indicater speed


john
 
I think I may have found the problem but not yet confirmed. When I looked under the dash I assumed the round cannister was the hazard unit as the one I have as a replacement is round, its connection is one cable to one terminal and two cables connected together to the second teminal. But when I looked at the wiring diagram the indicator are wired as I just described but the hazard unit only has one cable in and oned cable out. so it looks as if the original cannister is rectangular being replaced with a round unit. so we will see


john
 
Hi John,

The original Hazard flasher unit was indeed rectangular, but in reality the shape is not important, not in terms of fuction at least. The capacitor within will determine the frequency with which the unit flashes.

Ron.
 
Old style capacitor and relay flashers are load dependent so the flash rate depends on the total current drawn by the circuit, in a hazard situation twice as many bulbs are flashed, this invariably speeds the flash rate. In modern (though they still make mechanical cap relay ones) the flash rate is not load dependent. Possibly your tester is of a younger generation :LOL:

Graeme
 
because of my disability it is difficult for me so I changed the unit on assumption and not correct analysis, in other words because the replacement unit was round i assumed that the one I took off was the correct one being round. When I can I will check the colours of the individual cables so as to make sure that I fit to the correct unit


john
 
You must log in or register to reply here.
Back
Top