Photos would be helpful.
I've not looked at this part of the heater system, but I'm not aware of the resistor being in the engine bay - I've certainly never seen it. I would expect it to be under the dash or in the heater box itself (for fan air cooling). Probably the best place to ask for advice locating it is TCB themselves as they strip these cars and will know.
Also, there are 2 types of heater systems which are very different. The JDM cars have 'climate control' which is an automatic temperature control. The UK versions just have a cold/hot dial. I'm not sure which version you have.
I very much doubt the resistor would have been glued into 'transport packaging'. Far more likely it's intended to stay attached.
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