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Intermittent Wipers

Posted: Tue Sep 23, 2014 5:52 pm
by panky
I've found this extremely useful and have fitted the kit to both of my Commer campers as well as to Ted the Traveller.
Bagged the three kits for Christmas last year :D

The Maplins kit, only about £8

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After assembly. Only one of the relays is actually needed on such a simple system.

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The switch is normally mounted direct to the PCB but with limited space behind the dash I made my own remote, you can buy one from Maplins but I happened to have a length of multi-core cable handy.
The wiring instructions supplied in the kit are quite complicated (for me) but this is all you need.
Notice it is for negative earth vehicles.

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Wiring for the remote switch.

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Being a ham fisted lump I managed to blow the timer chip (more than once :oops: ) but got replacements very cheap off ebay, so be careful.
One problem I had (on all the vehicles I fitted it to) was the wipers randomly flicked and stopped during operation when the engine was running and when I used the indicators, I put this down to 'interference' in the electrics and wired the PCB supply direct to a permanently live connection on the voltage regulator ( with an in-line fuse) instead of the fuse box and now it works perfectly.
The finished article.
I fitted the rotary switch in the blank on the switch panel

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The knob is off a TR3 and again was cheap on ebay, I think it looks the part.
The timed sweeps are 5 seconds, 10 seconds and 20 seconds, I very rarely need to use the original switch anymore :)

Re: Intermittent Wipers

Posted: Tue Sep 23, 2014 10:33 pm
by bmcecosse
But the wiper switch isn't connected like that! It actually earths the return from the wiper - which is fed with power all the time the 'Ign' is switched on!!

Re: Intermittent Wipers

Posted: Tue Sep 23, 2014 11:50 pm
by panky
The terminals A and C on the PCB simply complete a switch from the relay on the board to by-pass the original switch, there's no supply to them. It doesn't matter which way the original circuit works. I guess the red wire from terminal A should be shown as black as it's not a live.

Re: Intermittent Wipers

Posted: Mon Sep 29, 2014 10:52 pm
by bmcecosse
To save confusion then, it would be better to correct the drawing...

Re: Intermittent Wipers

Posted: Mon Sep 29, 2014 11:32 pm
by panky
Apologies, drawing modified to avoid any confusion.

Re: Intermittent Wipers

Posted: Tue Sep 30, 2014 6:36 am
by tysonn
I still haven't got round to fitting the kit I bought last year.Pretty sure mine cost a lot more than £8 though.

Re: Intermittent Wipers

Posted: Tue Sep 30, 2014 12:45 pm
by panky
They've gone up a bit, but they were £8 ish when I got mine

http://www.maplin.co.uk/search?text=int ... &x=18&y=18

Re: Intermittent Wipers

Posted: Wed Oct 01, 2014 7:01 am
by tysonn
Yeah I was probably remembering it with the postage.