What's this?

Hi guys,

Strated stripping my '85 K10 and found some kind of small electronic box under the driverseat (LHD).

DSC00259.jpg


Can some one tell me what this is for? :)

Thanx!!
 
Idle-up control box. It increases the engine speed when you turn on electrical systems such as the lights to prevent the battery from draining.
 
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