Bear in mind that the delay in these type relays is normally achieved using an R-C network. So there's 3 ways of getting the desired delay, alter the capacitor value alter the resistor value or alter both. I added a variable delay to my MR2 wipers (which originally only had 1 fixed delay) by replacing the fixed resistor part of the R-C network with a potentiometer. I found it was much easier to control the delay by keeping the original capacitor value and altering the resistor, more choice of values for resistors and more accurate control. If you can figure out which resistor & capacitor form the R-C network controlling the transistor (which controls the relay) it's easy enough to modify. My mod is detailed here jlawson.co.uk/originalsite/Various/Wiper%20Delay%20Modification%20.htm
relay 19 and 99 have the same pinout, 19 being a set delay and 99 being 'programmable' by turning the intermittent on then off, then on again when you want the wipe time set.
I got my new relay (99) today and it does not work? It's all wired as the above - but although low/high speed & park work fine it won't do an intermittant sweep??
My switch supplies a 12v signal to the 'I' terminal when switched to intermittant but nothing happens? When I switch wiper off (12v signal goes to 0v) it then triggers the relay to do a single sweep and no more?
Heeeeeellllpppp! I don't understand
PS, tested my 'old' 99 relay & it does the same thing.
On this thread a guy has the same issue - he found the fix but I'm not sure how his wiring fix works for my circuit. It seems part of the relay is not energised during the 'delay' period but I'm not sure which pin should get power to fix it.......
Andrew - you might be right - 12v to 53s does switch it off again. Bench tested it with a psu and nothing blew up Not sure if it's possible to wire this to my wipers then - it really should work, as the Porsche one did...........
I can’t give any more input other than what’s on the diagram or the thread you linked to, but I will have a goosey tomorrow at work and see if autodata etc have any diagrams including 99 and see if it matches up to what we’ve found.
At least with it plugged in the wipers self park properly now.
I'm using a Ford Capri/Escort column switch - with the Porsche relay I had 'off' as the lowest setting (intermittant +12v on the switch) and 'on-intermittant' as the 'off' position.
At least with this relay the 'off' is 'off' on the switch and the single sweep 'intermittant' is now the 'intermittant' on the switch.
It's usable at least, the Porsche relay seems to have permanently died now, even with the new caps fitted.
I have a PDF of the relevant year Golf wiring, if you drop me a PM with an email I can fire it over and I’ll endeavour to make an image version I can post here asap to assist anyone who stumbles across this thread in future.