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MG MGB Technical - Where's the flasher?

Before I go searching, can anyone tell me offhand where the flasher unit is situated in a UK 1978 MGB?
Ron
R. Algie

Ron. On the North American specification cars it is located on the right hand (passenger) side of the cockpit, on the firewall just below the dash. There is the flasher unit for the emergency flashers and the flasher unit for the turn signals, both of which are located adjacent to each other. Until better guidance comes along, you might want to check in the passenger area for the two rectangular boxes which are the flashers. If they are not in the passenger area, check behind the steering column.

Les
Les Bengtson

On my '71 B/GT the directional flasher is located
near the wiper motor (starboard side, under dash).

The emergency flasher is located near the emergency
indicator lamp - below the radio (center panel cluster).
Daniel Wong

Same as Les says for a late RHD, i.e. bottom of the firewall right-hand side. The hazard flasher has brown and light-green/brown wires, the indicator flasher green and light-green/brown. Despite their being the same colour the latter wires on each are *not* interchangeable, they are different electrical circuits. You usually get two pairs of wires coming out of the main harness at the same point, but each pair is wrapped for a bit further, so it should be easy to tell them apart.

But what's the problem, and with which circuit indicators or hazards? It's usually a problem with the hazard switch (affects both) than the flasher units.
Paul Hunt

Hi Paul
Thanks for the info, the flashers have developed a problem, they work for the first half dozen or so flashes then stop, the hazards are working OK, I was going to change the flasher unit to start with as the easiest option. I renewed the unit back in '95 when I restored the car but I couldn't remember whereabouts in the car it was and the Haynes manual helpfully just says it's under the bonnet!
Ron
R. Algie

Do the lights just stay on? Or stay off? Both sides or just one? If they stay off, then it's almost certainly the flasher unit. I've known new ones fail again within weeks. If it's both sides, but they stay on, it could be the flasher unit, but could also be a bad connection in the common wiring, which for a rubber bumper could be the wired ground for the front units (shared with the headlights) or anything back from the indicator switch through the flasher unit, hazard switch, fusebox, ignition switch etc.
Paul Hunt

It's more or less packed in altogether now, before it did it would flash about half a dozen times then stay off, both sides were the same, I'm waiting for a new flasher relay getting delivered, I thought I'd a spare but can't find it!
For info, it's fitted in a small holder along with the hazard unit inside the car on the bulkhead to the right of the steering column next to the wiper motor.
Ron
R. Algie

Hi All
A new flasher unit solved the problem, finally got one after the supplier originally sent a set of points by mistake!!
Thanks to all who replied,
Ron
R. Algie

This thread was discussed between 23/12/2008 and 14/01/2009

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