Retrofitted webasto wiring

[rhyre]

Hey, I've just installed webasto vevo to caddy 2k5
Everything works except for starting fans without ignition. I got manual AC and i've read i need to get webasto pin8 wire and connect it to something. And there is a problem. I dont know where to. Anyone got some pictures and diagrams where connect it to? Some say J13 relay but internet search came with nothing which one is it.

[petrev]

Hi,

Not all Webasto/VW have the fan signal output on pin8 connected!

Mine didn't - Have to connect the water pump power to a relay to switch on power to the heater fan when the Webasto is running.

My notes on my particular install
https://caddy2k.com/forum/viewtopic.php?p=447471

[rhyre]

You are not authorised to read this forum.

My plug doesnt have wire but i got new plug with all the wires. VCDS got some V2 Blower on/off indicator.
So you just basically have to connect power through a relay to pin3 of this 10pin plug on fan ? And thats it?

[petrev]

The official VW method is to cut into the speed-2 output wire from the HVAC panel and insert the changeover relay to swap to a constant feed.
This means when you power up your Webasto you automatically get speed 2 whatever the control panel is set to.

[rhyre]

Ah thanks now I get it with changeover relay. In diagrams it was a connection and I didn't understand how it supposed to work