Gretsch
SILVER Star
they improved the lighting but now I'm wondering if the wiring/relay needs an upgrade?
The harness in the kit wouldn't be a bad idea for the tired original wiring. Additional fuses and relays and better wiring in it to help things. Not sure if it would improve the lighting that much. I didn't notice a big improvement between using the harness and using the original wiring (I switched between using it and not to see if there was a vast improvement in the brightness, I didn't see any real difference on my truck). I ran with the stock wiring because it made my HBI work to pass inspection until I could get another harness. I am not sure it matters really but I did spring for the ARB harness more for fire prevention (and making my HBI work) than anything. The fact they include a harness in the Koito kit prolly tells you its better with than without. That kit is a great buy IMHO. HTH.