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So it looks like my van has one of these heaters as standard. Unfortunately, it's mounted under the battery so not exactly easy to get to.
My question is, are these designed to help engine warm up, or just to provide cabin heat sooner?
Any idea on the activation and deactivation temps etc? Do they turn on only with the engine running, or with the glow plugs?'
My goal is to connect these to my solar panels to help with engine warm up beyond the factory parameters, but knowing those parameters would be a good start.
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