an example of wiring costs, I charged Rs 10,000~20,000/- to wire up honda, toyota, nissan n mitsubishi 4 cyl engines - these are from mid 2000s - all looms and wiring would be top notch. (the charge varied depending on the job at hand)
There were tons of "ustaad" types who would "shtart" it for Rs 1000/- they did not care about anything else than "engine ghoom raha hai - start hai" no check light, no start signal, no A/C signal, no safety fuses and no soldering or heatshrink.
The job would be "nitto taped" closed and handed over.