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How do you wire a 12v key-hot pigtail?


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Posted

mine already had an internal regulator.. looking at your picture it seems the wire already has the diode. if you see closely by the shrink tube where its black clse the the plug.. just plug it to a switched source and you will be charging. mechman did the diode for you

Posted

i did this long before i was a member here and needed to upgrade my stock 40a alt due to adding electric fuel pump and dual electric fans so 40a wasnt enough. i got a stock chevy 105a alt. the diode or idiot light was the only way to make it charge. if i would have known about mechman i would have gotten a bigger alt

Posted

mine already had an internal regulator.. looking at your picture it seems the wire already has the diode. if you see closely by the shrink tube where its black clse the the plug.. just plug it to a switched source and you will be charging. mechman did the diode for you

Okay, I was just asking cause you had on the pic of yours you wired it to the "batt" terminal on the volt. regulator. But yea, i see it now, i think you're right man. Now what exactly do i do with all the factory plug-ins for the old alt? Just leave em be?

1991 Nissan Pathfinder
Mechman 240A alt
All wire 100% OFC 1/0
Kenwood KDC-X497
Pair of Kenwood Tweets/Pair of Rockford P1 5x7s
9ft3 vented box ~32hz
2 AQ HDC3 copper coil 18s
SAZ-3500 @ 1ohm

Powerbass ASA 200.2
39 sq. ft. damp pro.
Kinetik 1200&2400(x2)

Posted

no. check which one has the hot wire.. get a light tester and see which one is hot when you turn the car on. then splice into that one.. you can also go on ebay and find a plug in play plug but why spend $20 when you can do it for free

Posted

dude you've been a big help!! thank you! if i run into any problems ill shoot you a pm

1991 Nissan Pathfinder
Mechman 240A alt
All wire 100% OFC 1/0
Kenwood KDC-X497
Pair of Kenwood Tweets/Pair of Rockford P1 5x7s
9ft3 vented box ~32hz
2 AQ HDC3 copper coil 18s
SAZ-3500 @ 1ohm

Powerbass ASA 200.2
39 sq. ft. damp pro.
Kinetik 1200&2400(x2)

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