Supercharged111
Truly Awesome
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My '88 has the same headlights. My take on the 4-high mod is posted previously. (Post #467)
https://www.gmt400.com/threads/4-hi-headlight-mod.122/page-16#post-989084
That link definitely doesn't go to post 467, but I found my way there. I did something similar to my 98. It has HID lows and regular highs with 4 hi mod. I slipped a diode into the relay control side to keep from backfeeding as well. What crimpers do you use for the weather pack connector?