Looking for a GT foglight wiring harness...
#11
I used the GT headlight switch, and used the fog light wire where
it went to the SJB. Cut it and extended it to under the hood.
Stole power from the OEM fog light fuse location in the BEC.
Stole ground from the gronding bolt right above the passengers
side headlight. Stole high beam signal from the passengers side
headlight harness. Wired a 40AMP fog light relay to be sinked
from the sinking fog light wire from the OEM GT headlight switch.
The last wire goes from the fog light connection on the relay
back to the headlight switch for the fog light indicator LED showing
that in fact the fog lights are getting 12VDC all the way to them
(good fuse, good relay, good wiring) not just that they 'should' be on.
Another additional logic reed relay makes the fogs come on
whenever the high beams are on unconditionally.
The mechanical lockout in the GT headlight switch makes me
turn on my clearance lights before I can pull out the fog swicth
so the chime for leaving your lights on prevents accidentally
leaving your non OEM SJB logic wired fog lights on.
The SJB is for logic functions. Its easier to write a line of code
than it is to hard wire the fogs to only be on when the high
beams are off and the 10 minute non moving auto power down
feature. By-pass the SJB when wiring the fogs manually with relays.
The relay for the fogs is under the hood in the BEC and the
SJB just provides a sigal at the right time to turn the relay on
in turn powering the fogs.
it went to the SJB. Cut it and extended it to under the hood.
Stole power from the OEM fog light fuse location in the BEC.
Stole ground from the gronding bolt right above the passengers
side headlight. Stole high beam signal from the passengers side
headlight harness. Wired a 40AMP fog light relay to be sinked
from the sinking fog light wire from the OEM GT headlight switch.
The last wire goes from the fog light connection on the relay
back to the headlight switch for the fog light indicator LED showing
that in fact the fog lights are getting 12VDC all the way to them
(good fuse, good relay, good wiring) not just that they 'should' be on.
Another additional logic reed relay makes the fogs come on
whenever the high beams are on unconditionally.
The mechanical lockout in the GT headlight switch makes me
turn on my clearance lights before I can pull out the fog swicth
so the chime for leaving your lights on prevents accidentally
leaving your non OEM SJB logic wired fog lights on.
The SJB is for logic functions. Its easier to write a line of code
than it is to hard wire the fogs to only be on when the high
beams are off and the 10 minute non moving auto power down
feature. By-pass the SJB when wiring the fogs manually with relays.
The relay for the fogs is under the hood in the BEC and the
SJB just provides a sigal at the right time to turn the relay on
in turn powering the fogs.
I have my fogs hooked up put the gt switch in today and everything works except for the led light. Can I just find the VT/OG wire from the headlight switch out by the BEC and connect it to the relay that powers the fogs? or do I have to run a wire all the way back to the switch?
"The last wire goes from the fog light connection on the relay
back to the headlight switch for the fog light indicator LED showing
that in fact the fog lights are getting 12VDC all the way to them"
#12
I have my fogs hooked up put the gt switch in today and everything works except for the led light. Can I just find the VT/OG wire from the headlight switch out by the BEC and connect it to the relay that powers the fogs? or do I have to run a wire all the way back to the switch?
"The last wire goes from the fog light connection on the relay
back to the headlight switch for the fog light indicator LED showing
that in fact the fog lights are getting 12VDC all the way to them"
"The last wire goes from the fog light connection on the relay
back to the headlight switch for the fog light indicator LED showing
that in fact the fog lights are getting 12VDC all the way to them"
That way you know that the fogs are really getting 12VDC.
Not just the SJB saying that they are on and not really knowing.
I have two wires running thru the firewall. One to ground the
added on fog light relay with the GT headlight switch and one
to supply 12VDC to the fog light indicator from the last fog light
in the system.
#14
Tap into it at the switch.
Believe you me, if it was under the hood to be tapped into
I would have tapped into it there...
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