4 high headlight question

[Daniel644]

My sister just bought on 04 Suburban Z71, is the 4-high headlight mod done the same on it as the 03-06 Silverado/Sierra (diode between high and low beam relays) or is there another method required, if another method is required is it possible to maintain the automatic headlights when doing it? I haven't had a chance to check out the fuse blocks and can't find anything that specifically talks about the tahoe/suburban platform. I've done the diode mod to my dads old 03 2500HD and my 03 Trailblazer (at the BCM) would like to do it to her's too.

 

[Mounce]

Should be the same deal at the fuse block. Done it on an 04 Tahoe and it was similar to the trailblazer, just different positions.

 

[Daniel644]

Done, it was the same as the silverados, pin 85 high beam relay to pin 85 low beam relay.

 

[Tnations]

I have done the conversion to a few trucks. I have a picture of how I did it. The red is not needed, the green is the one that makes the hi4 work, and the blue is if you want the fogs to stay on also. 12v 1amp diode is all it is. This is the main fuse box under the hood.