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       #Post#: 75391--------------------------------------------------
       hazard switch?
   DIR By: stevemac78
       Date: September 22, 2013, 10:57 am
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       Hi all, im on a bit of a wiring mission at the moment and im
       puzzled. My 1977 109 has the remnants of a hazard switch in the
       cab and a four pin indicator relay, both of which do not look
       original. My question is should my truck have one to pass the
       mot? If not can I still use the relay with out the switch wired
       in? There isn't one on the Haynes wiring diagram so im thinking
       not but would like it confirmed as whoever wired it in was a
       fucktard! Wiring is difficult enough without bodged shortcuts
       that are a fire hazard.
       Cheers, Steve
       #Post#: 75396--------------------------------------------------
       Re: hazard switch?
   DIR By: ashcrroft752
       Date: September 22, 2013, 11:20 am
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       Not needed until 1986, but they must work if fitted, I would
       remove the rest of the switch to be an the safe side for test.
       I can't help you with the wiring though.
       #Post#: 75397--------------------------------------------------
       Re: hazard switch?
   DIR By: stevemac78
       Date: September 22, 2013, 11:21 am
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       Nice one thank you. Its coming out! I'll get my head around the
       relay side of things!
       Cheers.  :thumbs:
       #Post#: 75398--------------------------------------------------
       Re: hazard switch?
   DIR By: ashcrroft752
       Date: September 22, 2013, 11:22 am
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       Probably be wise to wire it as standard using a standard flasher
       can.
       #Post#: 75399--------------------------------------------------
       Re: hazard switch?
   DIR By: stevemac78
       Date: September 22, 2013, 11:26 am
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       Yeh. Looking on eBay there are two types. A two or a three pin.
       According to Haynes its a two so I think I'll go with that.
       Thanks again!
       #Post#: 75432--------------------------------------------------
       Re: hazard switch?
   DIR By: GlenAnderson
       Date: September 22, 2013, 4:12 pm
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       With a bit of thought you can sort out a set of working hazards
       using a DPDT switch from Maplins, a bridge rectifier, warning
       light and an ordinary flasher relay. If your relay is an
       electronic type that can handle 4+ bulbs you can use just the
       one relay to do hazards as well as normal indicators. When I've
       a little more time I'll post up a diagram.
       #Post#: 75438--------------------------------------------------
       Re: hazard switch?
   DIR By: estwdjhn
       Date: September 22, 2013, 4:55 pm
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       Easier than that IIRC.
       Two diodes, an single pole on-off switch (ideally one that
       illuminates) and potentially an extra flash relay should be
       sufficient.
       Wire as follows:
       -
       diode - LH indicators
       live feed - switch - 2 pin flasher relay - warning light
       -
       diode - RH indicators
       #Post#: 75465--------------------------------------------------
       Re: hazard switch?
   DIR By: NoelC
       Date: September 23, 2013, 5:28 am
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       If you're a wiring numpty like me you may find it easier to put
       a flashing beacon on the roof and not bother with hazard lights!
       #Post#: 75466--------------------------------------------------
       Re: hazard switch?
   DIR By: stevemac78
       Date: September 23, 2013, 5:49 am
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       rofl that's about the size of it! Bloody good idea! Simple is
       best!  :thumbs:
       #Post#: 75499--------------------------------------------------
       Re: hazard switch?
   DIR By: ashcrroft752
       Date: September 23, 2013, 11:16 am
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       Flashing beacon on mine, not that I couldn't wire in hazards I
       would sooner have one thing less to potentially stop working on
       the short journey to the MOT.
       That and the company who we shared a trailer park with at work
       were awkward about any thing smaller than an HGV being driven
       around the trailer park without an amber beacon. There is no way
       I'm walking around a trailer park at 04:00 hrs in the rain doing
       a trailer check.
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