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Old 04-21-2008, 03:29 PM
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68 mustang headlight relay

i have a pretty good idea how to wire it but i just would like to double check. well its a 68 ford mustang. with one headlight system. is this the proper way to hook up the relay to the dimmer switch???


low beam (red/black) to #87 from relay to headlight
hight beam (green/black) to #87a from relay to headlight
ground #86
battery power #30
how do i hook up the wires from the dimmer switch to the relay??? both wires to #85??? im lost with fords lol.

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Old 04-21-2008, 04:21 PM
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Nope----still need 2 relays.
If you use 87a on the relay for anything---there is no way to shut off the lights.

Wire it just like that diagram I posted in the other thread.
(not at home now, or I would re-attatch the pic)

When you turn on your lights--this energizes the relay coils (s) thru the dimmer switch (relays power from #30 to #87). When the lights are shut of and NO power is going to the relay coil, #87a will be connected to #30.

87a would be used for something like remote controlled doors or button operated doors. This way the doors would operate when the the key is NOT in the ignition (off), and would break the power to the doors when the key is in the run position. This is a safety thing (that I am NOT using on the 59, as it has inoperable door handles).

Just using the doors as an example
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Old 04-21-2008, 04:21 PM
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I think I would setup a separate relay for high and low beams. Feed the relay activation off of the current feed wire for the low and high beams. This way the only wiring to be modified will be right out by the lights and will be easily reversible in case you or someone else ever wants to go back to stock. This wil also prevent a single relay failure killing both high and low beams.

Chet
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Old 04-21-2008, 05:16 PM
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Quote:
Originally Posted by Bryan59EC
Nope----still need 2 relays.
If you use 87a on the relay for anything---there is no way to shut off the lights.

Wire it just like that diagram I posted in the other thread.
(not at home now, or I would re-attatch the pic)

When you turn on your lights--this energizes the relay coils (s) thru the dimmer switch (relays power from #30 to #87). When the lights are shut of and NO power is going to the relay coil, #87a will be connected to #30.

87a would be used for something like remote controlled doors or button operated doors. This way the doors would operate when the the key is NOT in the ignition (off), and would break the power to the doors when the key is in the run position. This is a safety thing (that I am NOT using on the 59, as it has inoperable door handles).

Just using the doors as an example
i printed out the diagram for my files. thank you for that btw. i thought i read somewhere that you only needed one relay. oh well now i know what do to im clear on it all thanks again

p.s. my elks headlights are much much brighter and ive noticed better power to everything else. the nice part is when i have my stereo on blinker blinking and the headlights on i barley see a drop in my volts.
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Old 04-23-2008, 07:54 PM
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yay!!! bright mustang lights!!! but ones brighter than the other. . . idk how or why but one headlight is halogen and the other is incandescent . i told my sis shes gotta buy new halogens. a match pair.

anyways thanks for all the help yet again
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