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Quantity
1
Description
Sold as single relay harness kit.
The Dapper Lighting H4 Relay Kit is designed for classic cars using H4 headlight connections. If your old sealed beams are dim or difficult to see with at night, you may be experiencing voltage drop from a...
Reviews
4.9
8 ratings
5
4
3
2
1
Great Product, I have a recommendation.
Great kit, works great!!!
I have a 72 Cutlass and it worked great. I personally opted to modify the harness to reduce the length of the leads to the lights otherwise I would have had to coil it up and zip tie them up and try to hide the excess. May I recommend to Dapper that you leave long length but do not terminate the ends. Rather leave that up to the buyer to cut to length and then provide the four plug ends as pig tails that they can solder the (Black /Red /Yellow) together to the length desire. Cleaner install this way.
4 stars only for that reason.
Thanks
S
Stephan · March 13, 2026
Headlight relay for a 76 corvette
Huge improvement over 49 year old wiring to the headlights..alot brighter..simple hookup using factory drivers side plug for the drivers side headlight..quality stuff..deffenitly buy agin
B
Bob · May 14, 2025
1976 GMC Suburban
As advertised, simple installation, about 15 minutes. Started the truck and instantly noticed a significant difference in the headlights, strong, solid beams with no fluctuation or flickering. Just make sure you identify your headlights properly as single or dual per side..