Headlight relay waste of money?

[Cudajason]

thanks @chal340 that is very helpful. 

Funny though how we interpret things...I have a 74 cuda so I said two  light ebody, I always envision challengers and 71 cudas a 4 light e bodies.

I think I can make what you posted work thought!

Jason

[303 Mopar]

@chal340 - that is a great schematic, thanks for sharing!  Wiring is my nemesis but I may give this a shot.

[Marc70challenger]

   Relays are very easy to add for any accessory, be it lights, fans, A/C compressors, etc. I use them alot. If you have basic wiring skills there is no need to buy aftermarket harnesses.   

I was like omg, I'll never get all this complicated wiring stuff. Then spent some time reading and watching YouTube videos.  (Shook cob webs out from old EE courses lol ) Completely wired up a car. And ran almost everything through relays.   Not that tough once the light bulb goes off.   

[headejm]

@Cuda Cody How about adding @chal340 excellent schematic to our reference library? Or at least make this a sticky thread. 

[Cuda Cody]

Good idea @headejm      I added @chal340 to the pinned thread about wiring diagrams.

https://forum.e-bodies.org/electrical-and-audio/11/colored-wiring-diagrams-70-cudachallenger/1349/

@Cuda Cody How about adding @chal340 excellent schematic to our reference library? Or at least make this a sticky thread. 

[chal340]

Thank you @headejm for the recommendation and @Cuda Cody for adding this shematic to the library.

[HP_Cuda]

What we could do here is post up a Short how-to video on setting up your own relay setups for the most common items.

That way if you want to do something different you will have the knowledge to do so.

[cataclysm80]

Headlights, Road Lamps, Power Windows, Horn, Time Delay, pretty much anything with a relay, let's figure out how to replace it with a readily available modern relay.

[shawge]

In addition to the headlights, I also added relays to the heater/ac blower motor (Classic Auto) so that it gets full 12V.  It's like a wind tunnel now on high

[Valkman]

If you're using halogen bulbs they run much hotter than the old sealed beams so your bulb connectors could burn up,  and you can get a cheap complete relay harness on ebay for $10 with ceramic connectors. It's easy to install and it's pretty much a no brainer to me!

[cataclysm80]

Has anyone had halogen bulbs melt the connectors on a new M&H harness?

I wonder if I could just install those ceramic ends onto the factory harness.
Is it a bad idea to run Halogen without a relay?

[HP_Cuda]

The problem with adding specific Halogens(H4) on ebodies is that you have to do some cutting to make them fit.

[Valkman]

Has anyone had halogen bulbs melt the connectors on a new M&H harness?

I wonder if I could just install those ceramic ends onto the factory harness.
Is it a bad idea to run Halogen without a relay?

You could just pop out the prongs out of the old connector and then swap them out, but you better off using a harness like the one above. It's pretty much a  plug & play, your lights shine better, and there's no risk to cooking the wiring elsewhere in your car.