12V Universal Electronic Flasher/Hazard Relay 21Wx2 + 5W

  (4 Reviews)
Price:  £19.49   (£16.24 Exc. VAT)

Product code:  P00971



13 in stock

Universal 12V electronic flasher and hazard relay that can be used to operate incandescent indicator bulbs in most vehicles. Operation is as follows:

  • Operating as a flasher - 2x21W + 5W (front and rear 21W indicators, plus an optional 5W side repeater)
  • Operating as a hazard unit - 4x21W + 2x5W (2x front and 2x rear 21W indicators + optional 2x5W side repeaters)

Maximum capacity is 98W total.

Supplied with loose metal bracket for fixing. 


Terminal No.



To earth / ground


From +12V supply


To indicator switch (selecting left/right or off)


To dash panel warning lamp






Please note: not for use with LED bulbs.

  • Voltage rating: 12V DC
  • No terminals: 4
  • Terminal size: 6.3mm blade
  • Bracket type: Loose metal bracket supplied or use relay holder P00708
  • Overall dims (inc. terminals, exc. bracket): 30 (L) x 30 (W) x 51 (H) mm

Part Number:  GFL5

Average Rating (4 Reviews):  
Write a Review and share your opinions!

Poor quality
18 September 2022  | 

Failed within 6 months.

Won't activate, either on all the time, no flash. Or off.

Used the car for less than 100 miles.


Hi Connor, Thank you for your review. We work hard with our partners to make sure our products are of the highest standard so I am very sorry this has happened to you.

Please contact our sales team on 01844 885 100 or at sales@12voltplanet.co.uk and they will be happy to look at either replacing or refunding the item under the warranty.

Indicator flasher
06 May 2021  | 

Just what I needed for a trike i am building.

Brilliant product
16 February 2021  | 

5 star service

Perfect for cars with questionable Earths
10 February 2020  | 

I used this on a 1978 Spitfire where the original Lucas units use the body of the flasher unit as Earth, usually unsuccessfully. The additional connections on this unit allowed me to fit a dedicated earth lead and a warning buzzer to show that the indicators were in use (not easily noticeable in a convertible). Very pleased with the product.

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CALL Sales & Support: 01844 885100
Email: sales@12voltplanet.co.uk
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12 Volt Planet

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