intermittent wiper install question

[tg986]

Following the hack instructions for adding intermittent wipers on my 2003 986, I purchased and installed the potentiometer and relay. When I switch the wiper selector to intermittent and dial the potentiometer all the way to the right (longest delay) the max delay is about 2 seconds. Turning the potentiometer to the left one click or more (shorter delay) results in no delay. All other wiper functions operate correctly. Can anyone suggest what I might troubleshoot first?

-Tony

[Andrew McD]

Hi, I've just added the variable intermittent wiper hack. Is the max delay as Tony asked just 2 seconds? As there is very little difference between max and min, or is that normal?

Thanks, Andrew.

[Loren]

Have a look at the install TSB - as I recall there is an adjustment on the relay itself.

[Andrew McD]

Hi Loren, Ah, is it this one 257-268carrera-windshield-wiper-relay? If that is the case how do I set the relay? As mine is the 911 one. Thanks, Andrew.

[Loren]

If you have the 996 relay then I think there is a screw adjustment on the top of it.

[Andrew McD]

Nope, no adjustment on the relay, or at least the one I need. Local OPC tells me there is a problem with the dial, so i'm waiting on a new one. With no wiring and just using the relay I get about a 30sec gap. Connect in the dial and it drops to 2 seconds.

[Loren]

Another option would be to install the rain sensor option. It comes with an adjustable relay (and the sensor).

[Andrew McD]

All sorted, it seems there are two different dials. The first one had only have 4 clicks, the second one has a lot more and works fine. :-)

[Andrew McD]

If this happens to anybody else, the incorrect dial for this hack is; 996 613 127 00