ltm01
2nd Class Ticket
Posts: 6 
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Post by ltm01 on Mar 28, 2014 4:27:16 GMT
Hi, the indicators come on but don't flash. Usually this means the falshing unit is broken. Do I need an 'original' part for replacement or can I just get one that will work with 12v 9amp battery?
Your advice appreciated, thanks.
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Post by henri on Mar 28, 2014 9:19:06 GMT
most relays in car shops/halfords are for dc electrics so you do need a scooter ac relay .on vespa's the front an back flash alternately to keep a steady load on the circuit so it needs to be a vespa relay .by original i'm guessing you mean piaggio genuine part ,where electrics/electronics are concerned i usually go with whatevers easiest/available in local scooter shop or e bay.as the good quality pattern parts seem just as good as genuine an loads cheaper .
when you say they come on but dont flash,do you mean 1 lights up either back/front or both .if both def ya relay ,but if jus 1 i'd check/clean contacts an earths an bulbs before swapping relays .also had it on a px that they didnt flash at mot but had been fine before setting off.was a dud battery taking all the voltage ,flashing when i'd charged it but dud by mot station.undid the battery earth an they flashed again.as yours is a 1990 probably a non-battery model so disregard this,but if a new relay dont cure it look for dodgy reg box or power drains ,as low supply voltage makes the relays slow or unoperative.as ya said above most times its the relays ,these are just tips on what next if swapping dont cure it.hope this helped,Henri
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ltm01
2nd Class Ticket
Posts: 6
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Post by ltm01 on Mar 28, 2014 21:22:54 GMT
Thanks Henri. It is a '91 and has a battery. It is a case of the front ones coming on without flashing and the rear ones not coming on at all. Your tips much appreciated.
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Post by kru251 on Mar 28, 2014 22:52:17 GMT
A usual problem is the lack of contact with the little pin that engages in the bodywork on the side panel and carries the connection for that rear indicator (or even a blown bulb?). That will create the issues you have of a front static 'flasher'. Clean the brass contact and spray a bit of WD40 into the bodywork hole.
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Post by henri on Mar 29, 2014 8:55:15 GMT
kru251 is right on the money ,always tempted to get rid of it an just wire it in with a spade connecter so you can still take panel right off.if i'm remembering right thats how spanish bretta's have indicators wired.always seemed a better/simpler way .but as its happening on both sides either both pins have grotted up or its something else .i'd still clean all contacts an earths an swap out ya relay first tho,it usually does the trick .H
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Post by sbwnik on Mar 30, 2014 20:55:01 GMT
If it's both sides on the rear end, check the wiring. PX indicator electrics are incredibly simple to trouble shoot -
The relay works by taking power into the central connection and the flicking from one of the remaining two connections to the other. The relay then feeds out one wire for the front, and one for the rear, once they get to the handlebar switch they get directed to the relevant side.
Nine times out of ten, if it's a problem on both sides then start by checking the wire that feed that end. Ensure that it's connected properly, and continuity test it for damage. Relays themselves are very robust.
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carlos
2nd Class Ticket
Posts: 3
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Post by carlos on May 27, 2020 8:01:15 GMT
If it's both sides on the rear end, check the wiring. PX indicator electrics are incredibly simple to trouble shoot - The relay works by taking power into the central connection and the flicking from one of the remaining two connections to the other. The relay then feeds out one wire for the front, and one for the rear, once they get to the handlebar switch they get directed to the relevant side. Nine times out of ten, if it's a problem on both sides then start by checking the wire that feed that end. Ensure that it's connected properly, and continuity test it for damage. Relays themselves are very robust. |
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