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There are no headlight washers on an fd. You mean the window washer sprayer? You could just buy 1 or 2 aftermarket ones from the auto part store and just hook it up in front of the cooler. And take the line off for the stock ones, you will have to add a longer hose to connect to the sprayer. Them bam anytime you use the washers it sprays onto the cooler, but you will have the wipers start to move unless you unplug the motor
Just thinking out loud, but seems like you could use a boost pressure switch to activate the sprayer...same as some of us use it for boost activated WI systems. You would just need to run your own separate power supply to the pump.
On a side note it also seems like you would need a lot of capacity for such a system to be effective and might find the stock tank a little undersized.
The way Mazda went here, rear tank lines to the headlight washers were disconnected and run to a pair of nozzles in the intercooler duct and paired with the front tank for added capacity.
The headlight washer switch is momentary on, so a bit of a pita if you wanted to run it continuously on, on-boost. Euros also had headlight levelling switch.
I have installed an intercooler controller water spray / elabtronic, with the euro tank in the trunk.
As said I would like to use the headlight switch without the headlight up/ light on, so I could manually spray water on the intercooler .
Here is the wiring diagram , thanks for the help
One of the guys over here recently did it by cutting the power coming in via the headlight switch (red/blue wire) and providing an alternate power source.
This, up in the top LHS is how Mazda Au did it, can't see an orange wire in your arrangement though.
One of the guys over here recently did it by cutting the power coming in via the headlight switch (red/blue wire) and providing an alternate power source.
This, up in the top LHS is how Mazda Au did it, can't see an orange wire in your arrangement though.
you mean red and black ? headlight washer switch.
The only "orange'' wire I have on the headlight washer relay is a blue/orange wire...
That's your headlight washer switch, that's untouched.
Originally Posted by MILOS7
you mean red and black ? headlight washer switch.
It's the red/blue coming into the top of the cleaner motor and relay(bottom left corner of connector D3-01) - leading to diagram E-1, retractable headlight system, which seems to put the headlights up...and then enable the headlight washers too.
The blue/orange in the RH top corner of D3-01, goes to the windscreen washer, diagram D-1. Looking at it and the white, I can't see how splicing them would work, except to let the smoke out, unless I'm missing something from a quick look.
The extract in the picture was written several years after the rx7 program ceased, so maybe something's got lost in translation in the intervening years - or wire colour changed. I'd probably probe the back of the connector with a meter, press the appropriate switch and see what's happening, if you wanted to check. The simplest approach seems to be providing the red/blue with an alternate 12v source.
Last edited by billyboy; Jun 11, 2016 at 04:30 PM.
I think your only way forward is to probe terminals.
I can't see any connector in the diagrams I have corresponding with your colours. Only thing I have is the common connector, X27, is last on the rear harness, there's another connector further up the line, then the combined windshield washer motor and headlight washer motor and relay connector.
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Here is the wiring diagram , thanks for the help
based on the diagram, all you need to do is cut the R/L colored wire (red with an L stripe whatever L is?) m and the side from the relay directly to a battery + source (fused of course). the other half you cut, terminate or something as it will be hot when the lights are on.
Having the water bubbles sprayed over the surface of the intercooler or radiator will take heat away as it evaporates in-turn removing heat from said cooler. The water molecules take heat with them as they evaporate and aide in cooling as heat rises to the surface or fins of the cooler.
