Vintage Air heater

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The weather is getting cold so I had my heater running the other day and all seemed fine. When I got back and turned the ignition off the heater fan kept going. I wired the heater the way Vintage Air showed in their manual, which was to hard wire the heater, but I decided this wasn't going to work. I had plenty of Bosch relays from another project and wired one in. The relay is controlled by the ignition and now shuts down the heater. It is alot better to turn off the key and not have to shut down the heater, at least to me it is. Here is the diagram I pulled off the internet and a few pictures of the relay mounted on the firewall.