Relay wiring for Headlights???
 

I can't seem to find the diagram I am looking for for the Headlight relay conversion. I am installing the H-4 conversion from Rick's (great product) and need to know exactly how many and which relays to use. I have a couple of relays that are 4 prong, do I need 2 for each ligh (hi/low)?? Or do I need to get the 5 prong with the 87a terminal and run the 87 terminal to one light and the 87a terminal to the other light and use a 2nd relay for highs? Thanks in advance for the info. I will be posting picks of the original lights and new lights installed with and without relays.
Also, does anyone know which relay to use so the interior dome light will fade out slowly (like newer vehicles) when the door is closed? Thanks in advance!

Thanks,
Shawn

Here is a link that was posted a week or two ago...
http://www.classictruckshop.com/club...ead/lights.htm

http://www.madelectrical.com/electri...adlights.shtml

This site is great@!

http://www.madelectrical.com/index.shtml



:bowtie:

You need to use SPST relays either 4 or 5 terminal, 5 terminal just has two 87 terminals. The 87A terminal is on the SPDT relay. Use one relay for low beam one relay for high beam both lights to same relay. Go to this link and click on "Click here to view catalog page"for a terminal diagram.
http://order.waytekwire.com/CGI-BIN/...7D7B71+M37+ENG

Thaks guys, that's what I'm looking for. Neonlarry, did you ever figure out the dome light dimmer relay??
Thanks again.
Shawn

No, I haven't figured out the dome light. Give me a couple of year, make and model with them and I'll see what I can find out . I'd like something like that also to go along with the wiper delay switch I'm putting in.

http://www.classictruckshop.com/club...ead/lights.htm
Good link, good drawings, good reading.

heres annother one.

Here is a link to a circuit diagram.
Most all the parts should be available at radio shack.

Relays
 

I was able to find the relays at radio shack for $6 bucks a piece

Call 1-866-866-1315 autothisworld I think that have the fading dome light I know they have the one touch up and down for power windows for $39.99. If they dont check some street rod mags. I know I saw it.

I finally got around to doing the headlight conversion on my truck today. I live in a big city with lots of street lights so it's kinda hard to tell the difference but I think there's a little more light now. I haven't had a chance to flip on the high beams and I'm curious how they will look now. Btw, if it's still not enough light after I readjust my lights, I've got a box with the H-4 style lamps with 85/100 watt beams!

I wanted to do this on my practice vehicle (my truck) before I do this to my Camaro. Not too difficult, just took about 1/2 a day and some connectors to make everything look stock.

here's another link headlight upgrade

Dome light dimmer
 

I got a dome light fader from Web Electric.

http://www.webelectricproducts.com/products.htm

It works great. Model DLD-1 Dome Light Dimmer Module. I installed it next to the fuse box and hooked into the dome light wiring right there. I also installed two under dash lights to light the footwells and hooked them in. Lights fade out in twenty seconds when the door is closed but go out instantly when the key is turned or the truck is running. I didn't have doorswitches so I installed them in the rubber bumper holes at the top of the doors... much easier to wire and no drilling.. Drilled out the bumper and it fit over the switch too.

I got mine from Radio Shack. The numbers are listed on the bottom of the relay and on the back of the package.

12VDC/30A SPST Automotive Relay
$6.29
Catalog #: 275-226 Model: 275-226

yes they can you just have to look for them !!! although i didnt use the ones i got from the yard for headlights i used it for elect fans


now i am woundering if i can find the rite kinda thingy for the timed dimer dome lights ?

For those that have used the Radio Shack style relay, did you mount the relay to the radiator support with a self tapping screw and then use crip on wire connectors to attach to the relay? Anybody have any ideas to make this neater?

Go to the junk yard, look on the drivers side firewall on a square body fuel injected S-10. Grab the two relays, and cut the harness a good 6 or 8 inches down. Now the splices you'll make will be hidden and protected in the harness, and the connector will be water tight.

If you have a GMC where we have 2 of each head light where Chevy has 1 of each head light, do we need 4 of these relays? Or is it not possible with GMC's?

Tanker,
The concept is the same. One relay for low beams, one for the high beams. Only your wiring will be slightly different....I'm guessing not knowing the wiring diagram.