low beams on with high beams

[HISSIN50]

Hello,
i have an 88 GT vert (not that it matters). i have SPDT relays on low beams, high beams, and fogs.
i am wondering if i can wire the low beams to stay on when the high beams are on (like happens if you hold the multi-function switch in "flash to pass" position).

i am wondering the easiest way to do it and if there is a chance of overloading anything (dont think so with the relays). i also wonder if the stock headlight lenses can handle the heat from low and high beams being on at the same time (w/o melting or disfiguring). i have stock output bulbs in there.

i wanted to ask the wiring wizards about the way to do it. i was thinking that if i run a jumper from the high beam relay output (N.C - terminal 87) to the positive input coil terminal (86) on the low beam's relay, if that would not have a latching effect on the low beam relay. i dont think so......

or is there a way to tap into the flash to pass position and activate that when i want lows and highs on all at once (w/o holding the stalk back)?

please share any ideas about this idea. what is the simplest way to do it? also mention ancillary stuff like blocking diodes if it is necessary.
many thank to any and all advice and ideas.

 

[hllon4whls]

Just tie the + lead for the high beams to the low beam relay. Add diode in there so that you can have lowbeams only. If you have all the relays positivley switches, then this is all you have to do. You can use a very small wire and diode becasue you will be only triggering the relay. Also put a diode in line for the swithcing side of the low beam to keep the power from backfeeding into that feed.

 

[HISSIN50]

Just tie the + lead for the high beams to the low beam relay. Add diode in there so that you can have lowbeams only. If you have all the relays positivley switches, then this is all you have to do. You can use a very small wire and diode becasue you will be only triggering the relay. Also put a diode in line for the swithcing side of the low beam to keep the power from backfeeding into that feed.

Hllon, thanks so much for the reply. i do have positive switched feeds to the relays (i just cut the original feed wires in the fender harness).

so if i run a wire from the positive coil terminal of the low beam relay to the positive coil for the high beam relay, with a blocking diode in line (cathode toward the low beams, anode toward the highs), that should work.?
i will get flow from the highs to energize the lows, but no feedback when just the lows are on.

and then stick another blocking diode in line on the positive feed coil wire for the low beams (86). put the cathode toward the relay (anode facing the switch), so juice flows from the switch to the relay, but no feedback through the wire [towards the switch] when highs have the lows activated..i think that is what you said (wanted to confirm).

i figured this is kind of a no brainer, but i once had a bad wire on the multi function switch and so i wired the brights to work off of a rocker switch (lows functioned normally). both had relays installed. and i had some sort of latching effect if i turned on the brights, then turned them off (IIRC, the lows would stay on even if the switch and car were off, if i had used the brights..or something like that). i cant remember what i had done to be able to figure it out, but wanted to see if this sounded good and would not latch.

thanks so much. i really appreciate the advice!