Hondata

Ok will do thanks mate

It is mate A12 to pin 85
All other pins are connected as stock as per your diagram
I tried it connected to the adjacent pin just in case I had it the wrong way round and again nothing
I jumped A12 to ground and got constant fan on so that verifies the connection is sound
I tested continuity from ...

Anyone ???

I jumped the A12 wire to ground and it activated the fan untill I turned ignition off dose this mean it's the s300 not switching the ground as it should ?

Spunkster any ideas or advice ? Would be much appreciated

Ok well I tried connecting pin 87 to the power side of the fan and the ground side and still nothing
I tried connecting the other side of the relay to the ECU in case I got the wrong pin and nothing

When I go to test outputs on hondata and check the fan with ignition on nothing happens

What's ...

But hang on pin 87 is already connected to fan power by the stock wiring so the only connection I was missing was the pin 85 to ECU ??? Adding that should make it work shouldn't it ?

Ok mate thanks I will

??

I know you said that's how it works with a standard bosh relay but the standard relays in Honda's are jap ones so I'm just needing to know if I go to the same pins on my stock relay will it work the same way ? Thankyou

So assuming I go to the right pins on my stock fan relay it should work the same way then

Ok but is your diagram that I posted the correct way to wire up A12 to pin 85 and then pin 87 directly to the fan to allow the hondata to be able to control it

Ok I can work out which pins are which mate but dose your diagram apply so I wire from A12 on hondata ECU to pin 85 then 87 direct to the fan in effect bypassing the switch

Could you tell me at least which pins on my relay are 85 and 87 ?

This seems to have been done alot by other people in the past I've seen your advice to them surely there's a way to tell what I need to do mate I seen the attached photo you provided to someone before what I'm most confused about is what pi s are 85 and 87 on the relay ? Screenshot_20200823_215535 ...