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Topic: Relay modification Headlamp and Marker lamp *pls review (Read 8437 times) previous topic - next topic

Relay modification Headlamp and Marker lamp *pls review

Reply #30 –
I swear all this time i thought a second element was energized to cause a HI beam appearance having both elements burning at once, the schematic is obvious,, just never noticed this before,,

Relay modification Headlamp and Marker lamp *pls review

Reply #31 –
Correct the 5 pr0ng relay is a double throw unit and can be used for HI LO. I have wired headlights to operate with both filaments on when shifting to HI. I did that on my chevy step side. Those headlights are the pits (extremely dim because of the factory design) So i burn both filaments at once on high.

Note you can actually wire the headlights with a relay to accomplish DAYLIGHT RUNNING MODE. Simple to do and this is something i have dun for customers. Just something different. That can be wired with a defeat mode controlled by the headlight switch. Just another thing to think about!!
I spend money I don't have, To build  cars I don't need, To impress people I don't know

HAVE YOU DRIVEN A FORD LATELY!!

Relay modification Headlamp and Marker lamp *pls review

Reply #32 –
What Tom is describing would be the way to go with composite (87-88) headlamps.  He's not wrong, he's just leaving out one step.  With your 4eye setup, you'll want to keep the high and low on together, so what you do is this:  with the relay high amp B+ Lets say [COLOR="red"]Red[/COLOR], along side the NC (low beam) output, we'll say [COLOR="yellow"]Yellow[/COLOR], strip about 1/2 inch off both side by side, then using a single wire strand, wrap around the exposed wire for both [COLOR="red"]R[/COLOR] and [COLOR="yellow"]Y[/COLOR] (joining the feed to the low out, bypassing the relay for lows), solder, reinsulate, done.  This way, your lows and Highs are on together, but your lows are on alone.  If you're trying to slave out the whole system, you'll need a 4 pin relay as the main on/off relay in addition to your 5 pin hi/low relay. This is how I modded the Hi/lo relay in my 88 with autolamps so that my projector retrofit would keep the bulb lit when I switched over and dropped the shutter down to get Hi beams.  I tried explaining this to TBirdX3 during his first BiXenon projector retro, so that he wouldn't have to use the relay harness that came with his kit.

Relay modification Headlamp and Marker lamp *pls review

Reply #33 –
tom,
as far as this discussion is concerned, are you indicating to burn both elements at once during HIbeam?  That way i understand your point of view.

Relay modification Headlamp and Marker lamp *pls review

Reply #34 –
Tom
pls try to see if you can complete this drawing,,
I am slightly stumped with how your switching the two different loads on one relay.
I assumed you are wiring directly to the wiring going out to the Low and HI as you described so that is what i show.
I show sow the common relay contact as vacant
I show the fuse not connected yet either.....

pls comment and if you can complete the drawing.

If not then it appears my first and second headlamp Hi/Lo layouts are ok , hope you can look at this.
X

Relay modification Headlamp and Marker lamp *pls review

Reply #35 –
You mind if I take a whack at that?
The hi/lo relay is at lo in the normally closed, de-energized position. when power is sent by either the headlamp switch or an on/off relay, the Lo come on. when switched to Hi, the Hi/Lo relay energizes and diverts to Hi. If you want Lo to stay on with Hi, you add a simple splice between Hi/Low supply and Lo output.

Observe:X

Relay modification Headlamp and Marker lamp *pls review

Reply #37 –
wont work dude,,, power disipation is still across the main light switch, we need to bypass the main light switch,, good work though.
 

Relay modification Headlamp and Marker lamp *pls review

Reply #38 –
The first one I posted with 2 relays only pulls coil side current through the headlight switch. 60mA, tops. If you want to pull less than that through it, well, tell me what you figure out.  Maybe since I posted twice, you only noticed the second one.

Relay modification Headlamp and Marker lamp *pls review

Reply #39 –
no sir,,
now that i have a moment...

the first post uses two relays.,, no real issues that i can see with it although it is a nice tricky way of going about it.
The second does not achieve the goal to remove heat from the headlamp switch.

For this most recent discussion and as tom pointed out,,,,
We must do this Hi/Lo control with one relay based on my begining layout.  Thats the thing tom needs to chime in on.
If he can show us, then it is like **you said** the best way.

I just need help on this one relay with Hi on one contact and Low on the other.

I did a dual relay already
I also have a single relay layout on page 1 you can scope out as well.
In respect to maximum heat removeal, i did a dual relay option which takes away heat from both the Main Light Switch and the Multifunction switch.

My objective here is to learn what tom is trying to say.

Relay modification Headlamp and Marker lamp *pls review

Reply #40 –
sorry, again, the goal is as broken out per Tom using only one relay

-Power the low on one set
-power the High on the other set
-bypass all high current around the main headlamp switch.
*it would be nice if the solution also bypasses high current around the multi-function switch like my dual relay does but isnt really requried at this time.

again, if it can be done then i just need help.

However, I know exactly how to do it but you have to ommit a few conductors from any future use on your vehicle.,,that part was not discussed yet so lets wait till tom can chime in.

If you like , you and i can work off line together on options.. pm coming

Relay modification Headlamp and Marker lamp *pls review

Reply #41 –
ok, spoke to tom today and a "single relay" to do the whole job is not what he meant.

A dual relay setup that integrates both an ign sw relay coupled with another relay in effect using a wire from the output of the M/F switch mixed in is what he meant.

So there really are no issues to this point with the following posts for future eyes if one decides to do this mod.......
**those with AUTO LAMPS need to be clear and understand that there is an additional benefit for you.
If you remove or lose power to any given relay in these mods or you simply remove the M/F switch, YOU STILL HAVE LOW BEAM headlamps.  By way of the parallel circuitry offered by the auto lamp system, your low beam lamps will still get power.  **KEEP THIS IN MIND for future troubleshooting to avoid making invalid assumptions.

post #1-includes both exterior marker lamps and a single relay for headlamps
===Practical, passes heat through the M/F switch and no one seems to find this to be an issue

post #4-Another option , offers maximum redunduncy, requrires more peices parts, allows one to isolate circuits easily.

post #11- solves heat across both the main and M/F light switch as they are only providing ground out to dual relays. 
===requires more pieces parts, simple to do, offers redunduncy and circuit isolation.
post #36 -This solution does a very nice job because it solves the heat problem across both the main light sw and the MF switch, in conjunction burns both your hi/lo elements together.  On a budget you might find this candle power to make it not worth buying HID lamps ect. 
===Best bang for your buck with fewer parts in that compared to some of my examples, its a clever way to get the most out of your lamps.  It is a  little more tricky to wire and the user can define if he / she wishes to jumper the "HI/LO" wiring or not do so and still maintain good main light switch heat managment.  The more i stare at this , the more i like it.  i just fear i may forget what i did later on down the line, thats what notes are for and wire tags


additional thoughts per discussions.............
adding a 70 or so amp relay to the ign switch will solve heat on the yellow wires and if you use a DPDT, one could also relive heat on the gray/yellow wire as well...or just use a separate relay just for that. Better discuss the ign switch on a separate thread though .

Tom~~ thanks for the quick review, i see what you are doing, appreciate your expertise to this thread and will post up what we finally do in the next few days.
I am pretty sure we are going to bundle an ign switch contactor mod with a headlamp relay mod and kill both birds with one stone so to speak.
From what i understand, we can use qty 1) ign sw relay approx 70A and qty 1) smaller 40A relay for headlamps and wire these two in such a way that achieves the job.  This will be an interesting helpful example once i lay it out against an evtm.  thanks again.

Relay modification Headlamp and Marker lamp *pls review

Reply #42 –
Ok so I just read the thread over agian and Im kinda confused which is the best way to go about this(so many diagrams posted). Ive got the old run the fogs and it gets the headlight switch to hot and they start blinking on and off. So hot in fact I almost could touch the rocker part of the switch. Not to mention upon doing a voltage drop test to see if I could figure out why one headlight seem dimmer(apparently just in my head!!) I found that some where in the system before the headlamps Im getting just shy of a 3v drop in high and low beam. Ive got plenty of relays sitting here just need to know the best route to go

Relay modification Headlamp and Marker lamp *pls review

Reply #43 –
call me tomorrow at 304 772 3411, i have no clue what your speaking of.