LSC15's 95 Tacoma 4x4

Go Back   Tacoma World Forums > Tacoma Garage > Lighting

Notices

Hella 500 question

Reply
 
Thread Tools Search this Thread Display Modes
Old 11-20-2009, 12:10 PM   #1
riggsjt [OP] riggsjt is offline
Member
riggsjt will become famous soon enoughriggsjt will become famous soon enough
Navy: SNA - yanking and banking T-45Cs
Name: Jake
Joined: Jun 2009, #18149
Location: Meridian,MS
Gender: Male
Posts: 94
riggsjt's Tacoma Gallery
Hella 500 question

Want to start off with saying I am new to wiring, so saying that, if i splice into the running lights instead of the high beams will the lights work whenever i have the running lights on?
  Reply With Quote
Old 11-20-2009, 12:25 PM   #2
Senior Member
jspadaro is one of the sharper tools in the shedjspadaro is one of the sharper tools in the shedjspadaro is one of the sharper tools in the shedjspadaro is one of the sharper tools in the shedjspadaro is one of the sharper tools in the shedjspadaro is one of the sharper tools in the shedjspadaro is one of the sharper tools in the shedjspadaro is one of the sharper tools in the shedjspadaro is one of the sharper tools in the shedjspadaro is one of the sharper tools in the shedjspadaro is one of the sharper tools in the shed
Name: Jim
Joined: Jan 2009, #12342
Location: Knoxville, TN
Age: 27
Gender: Male
Posts: 2,947
jspadaro's Tacoma Gallery
Quote:
Originally Posted by riggsjt View Post
Want to start off with saying I am new to wiring, so saying that, if i splice into the running lights instead of the high beams will the lights work whenever i have the running lights on?
Yes. But they will not be on if the running lights are not. You can also use a fuse tap if you want to simply be able to switch them on whenever your truck is on (what I did).

Light wiring is pretty simple stuff. All the hella 500 wiring does is use a relay. basic principle is:
The relay has 2 prongs that are a feed for power, say from your battery directly.
The other two prongs are to control whether the first two are bridged.

So you have what you want to turn on and off, presumably high power (55W in the case of hella 500's): the line goes from the battery to the relay on one of these prongs, and then from the other prong to your lights. The lights then need to be grounded.

On the other end, you just need _some_ source of 12V current going to the 3rd prong. This can be fuse tap to some switch to that 3rd prong, and then from the 4th prong to a ground.

The idea is that you really have two circuits of power here:
POWER ------------> RELAY PRONG 1 | RELAY PRONG 2---------> LIGHTS -> GROUND

and

POWER ------>Some switch->-------> RELAY PRONG 3 | RELAY PRONG 4 --------> GROUND
(This power source is likely not the battery, though that would work. Typically you'll use say a fuse tap so the Power is coming from a source that is automatically switched on and off with the ignition)
(The switch stops the power from your power source from triggering the relay if you want it off. If the power source isn't on, turning the switch on does nothing.)

So all a lighting circuit really is is using one source of power of lower wattage, to trigger the higher wattage lights. A relay can be thought of as an electrically-powered switch of sorts.

You could directly use a switch in place of the relay in the first circuit above, but this is bad practice because you're running 55W through a switch (likely in your dash). Directly using a switch is what you do for small stuff, though - like flashlights.

The relay lets you have your high-power connected to one side, and turn it on and off with a very low wattage circuit on the other. If the connection across prongs 3 and 4 have power, the relay will internally connect prong 1 to prong 2.

Hope that helped.
  Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Hella 700 vs. Hella 500 mjm540ii Lighting 4 01-04-2012 04:46 PM
Hella 500 question nb_tacoma Lighting 1 01-23-2011 03:34 PM
Hella 500 Question mwerner1 Lighting 6 07-10-2010 05:08 PM
WTT my NEW hella 500's for your Hella 550's rab89 Buy / Sell / Trade 1 03-18-2010 11:23 PM
hella 500 question taco2408 Lighting 16 03-03-2010 10:46 AM


Copyright © 2014 Tacoma Forum. Tacoma World is not owned by, or affiliated with Toyota Motor Corporation.