I hav a rodeo 88 and when I turn on my lights the wipers come on when I remove the relay they stop

one more silly easter egg hunt, seems that is all we get.
now....sad..
and guess what most cars have no such thing.
ill pretend you did say that, and said
"my rear wipers are totally dead. why." HARK A REAL QUESTION.?
ANSWER:
A fuse blown.
marked rear/wiper washer 10 amps.
blown.
there is no relay have schematic here.

poof i the pudding.... below.

No intermittent wipers- wipers will not park after using washer ...

www.ford-trucks.com > ... > 1987 - 1996 F150 & Larger F-Series Trucks

Oct 22, 2006 - I have been having trouble with my intermittent wiper feature and the windshield washer feature and parking of the wipers. For the last two ... Wipers won't turn off......sometimes!
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More results from www.ford-trucks.com

Ford Truck Intermittent Wiper Failure

www.misterfixit.com/nowiper.htm

It was a dark and stormy night . . . . actually it was. I had been experiencing someproblems with the intermittent wipers on my '88 F 150 the past week and that ...

Ford Wiper Switch ' eBay

If you want it to stop and not work just disconnect it at the motor if you want it fixed take it to a good garage

no country stated, no that DOES make this hard.
lighting does very by country, (DOT laws ......)
no symptoms posted. sigh
very old car.
why does wiki show 89 as first year.?
why is 88 missing in alldata.com
my guess, is 88 is build date? and not official mfg year date.
sold under 10 different names
my on line page shows, 1991 rodeo (usa)
head light relay , with 4 pins and the red-blue wire.
ok location.
the fsm im views shows a man with hood open
and removing the fuse box clear cover. and on said cover is the words. head lights, over the Relay spot.
lost the cover? or even look under the hood.?
there is a cab fuse box too with same markings.
the car came new, with the operators guide (sure lost) and has all that there. all fuses and relays.

quote.
Sales of the three-door began in the United States during the second quarter of 1989 under the Isuzu Amigo name

http://en.wikipedia.org/wiki/Isuzu_Wizard

see why not saying country , makes this car so hard.... link above.

Since changing the relay once fixed it, perhaps the problem is with the relay socket. Have you tried jiggling the relay to see if they will stop wiping? Perhaps there is a short behind or inside the socket.

If they try to move the fuse is not the issue, You need to check the linkages, they are under the panel where the wiper spindles sit, the plastic ends can break and stop them working.

Hello! I suspect a defective rear wiper switch...However they are very expensive...This is an unusual fault due to the off in 5 minutes factor...Is that a consistent time period or does it change? I would first remove the wiper switch...Pull the connectors...And spray with a product called DeOxit from Radio Shack...If that doesn't help... Located behind the glove box, up high, is the alarm relay control module...Take it out and visually inspect the circuit board with a bright light view the solder side for cold joints or damage...See photo of Wiper switch below...They run about $200 for a new one...I'd look for a used one...Guru..saailer






I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

the relay is built into the wiper motor its called the pulse contol module and comes with a new wiper motor. make the wipers come on and then get them to stay on while wiper switch is in the off position, then tap the wiper motor and see if it turns off, if it does then u need a wiper motor assembly and be careful opening the hood some wiper arms will contact the hood when the hood is open and the wipers are on

It is part of the cover for the wiper motor.

You take the fascia off that is at your knee area. There is a light and little switch for the wiper position. Then remove the cover (4 bolts) and loosen the wiper/relay block to get enough clearance to stick your long 1/4" extension through and onto the 10 socket you got onto the bolt holding the Main Relay on. The real problem is getting it back on. I cut a "C" out of the mounting flange and put the bolt in loosely. Then with the relay wired I got it slipped into place. Tighten it and the stuff you had to loosen to get to the Relay If you have a new Relay you could just plug it in and hold it up with a wire tie and not take out the old one.