Alternator adapter from large plug to small plug, very high quality - Fits GMCs from 2004 and older. You install it to convert your alternator from 120 amps to 160 amps. - Its benefit is for those who have weak electrical systems or flickering lights. Install a larger alternator and solve the problem permanently. - (( 160 amp alternators are available with me )) - Contact via WhatsApp or call 0578338962