timely Craig!
I have one of those "converted" wiper delay switches from Mike epps/scoutranch a guy just sent me for "testing". He says the wiring callouts on it don't match the wiring in his original sii. I've not yet got into that as I don't have a functional sii here right now. And the wiper switching/wiring onna fullsize rig is different, I looked at that two days ago on my own junker truck. So maybe the two different wiper systems used in sii had two different wiring runs???? Don't know, it's kinda way down on the to-do list right now!
But...scoutboy74 here has got this deal already figgrd out using boneyard Ford schnizz. But ya gotta catch him when he's in the sauce to explain. Hell, if trever can figgr this shit out drunk and upside down inna ditch...anyone can!
Don't know what Jeff uses for this function, he might already have a setup also. I'm not impressed with the scoutranch deal, it's cobbled up using hot melt glue.
Back in the guud old days, we could buy a wiper delay system off the wall at 7-11/pepboys!!! Sold for around $7.95 and mounted under the dash. My current wiper delay is built into my left hand fingers.
Here's my dos centavos on this subject. I gotta choose my words carefully, 'cuz I don't have the assistance of sailor jerry at the moment. That boy has a way of makin' the words flow like water.
I was able to easily incorporate j/y components including the wiper switch and delay brain from a late 80's furd p/u into my '74 sii utilizing the existing IH harness. I believe any full-size fomo p/u or Bronco originally equipped with an in-dash wiper delay control from m/y '78 thru m/y '91 would be a suitable donor. It's possible that fomo passenger cars from as early as m/y '72 thru whatever year they swtiched to a non-rotating dash knob design (guessing early to mid 80's?) May also have some potential. If the switch is dash-mounted with a shaft that rotates counter clockwise in addition to the two clockwise positions, it should work. The '92 body style change in the trucks marked the end of the dash-mounted wiper-switch in favor of the integrated wiper/turn signal switch.
I wish I would have snapped some pics of my step-by-step on this job, but it was fairly straight forward. With the j/y components purchased, I removed the factory IH wiper switch and compared it to the Ford switch. One of my goals was to make this setup appear as stock as possible to the untrained eye, which meant using the Scout knob on the Ford switch. The shaft on the Ford part is somewhat longer than the shaft on the IH switch, enough to be obvious. I either cut or ground the Ford shaft down so that the amount sticking through the dash would be roughly equivalent between the two switches. The shaft on the IH switch is completely round with a small hole drilled through the center to accomodate a set screw which holds the switch knob in place. The Ford shaft is half round and half flat to accomodate the Ford style knob. All I did was slip the Scout knob onto the Ford shaft loosey-goosey and scribed a Mark on the shaft for where the hole would need to be drilled. Then I drilled the hole for the set screw.
Now for the wiring, I won't be able to provide very many specifics. I'm not equipped with the exclusive mayben intricate detail recall feature. The wires for the IH switch are the individual female spade variety. The Ford harness has male spade connectors enclosed in a unified plastic plug. You can probably handle this a number of ways. I decided to carefully break the plastic plug on the Ford harness so that the apropriate male spade connectors could be individually connected to the corresponding female connector in the factory Scout harness.
As far as which wire goes where, I came across a diagram on the owlgorz internetz where a guy modified his early Bronco with a later model Ford switch. Pretty much the same process as I've outlined. I followed his diagram. I do recall having to make a couple deviations through simple trial and error in order to get it to work satisfactorily. By satisfactorily I mean, the variable delay functions properly, 1st clockwise position is high speed and 2nd cw position is low. This is opposite of normal, but just switching the speed control wires for one another is not the solution. That makes things worse in my experience. I decided it wasn't that big of a deal to me if those two positions were reversed as long as I had true intermittent wipers, which I do.
One other critical step is to ensure that your new Ford switch is grounded properly. With the Scout II switch, this was accomplished only via the attachment to the dash. For whatever reason, this is inadequate for consistent operation of the Ford switch. Sometimes it works and sometimes it doesn't. That's not the kind of intermittent wiper feature we're after. My Ford switch also had a ground wire attached to it for just this purpose. Ever since I got this wire connected to a suitable ground, my switch has worked flawlessly every time. I hope all this random gibberish makes sense and helps someone incorporate this very cool and inexpensive modification into their Scout II.
maybe thats the reason for the lack of info on intermittent wipers for Scout.
