[lil hoodlum]

Originally Posted by burnin oil

Totally not needed on a stock truck. Think about how long those parts lasted before failure. The stock headlight switch ran the headlights and the added load of trailer lights also. that was part of the deign criteria back in the day.. Now that I said that, the headlight relays do work really well. For the most part this is a keep it simple affair. If you are going relay crazy why not swap everything over to constant hot with switched grounds and add a body control module? Don't go nuts over the simple things. Save the relays for things like electric fuel pumps.

I am running the stock type headlight and dimmer switch in my 68 C10 daily driver for 24 years now. They work as they should but sometimes it seems as if my headlights "pulse" at night while idling. It is a little annoying and have been considering doing the relay upgrade because I have had to replace the headlight switch a few times. I do have a aftermarket wiring harness installed and all of the necessary grounds. I am still running the factory 65 Amp alternator too.