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#1
September 6th, 2008, 09:10 AM
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Rewiring driving/fog lights
I would prefer to to get to the relay with the option of using the factory switch. Any insight and locations of components would be appreciated. Thanks. |
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#3
September 6th, 2008, 07:19 PM
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The dash switch is fed through the main light supply and a relay.
What this means is the driving lights will not work when the headlites are on high beam. Install a seperate fused relay supply and a seperate relay off the battery then disconnect the wiring to the dash switch and use it as a 'ground complete' switch by making the relay winding hot at the relay and using only one lead to the dash switch and making a ground at the switch to complete the circuit to the relay winding. Any problem with the driving lights or circuit will blow the fuse or you can remove the fuse until any issue is fixed. Don't forget to turn them off as they are now manuel control and not involved with the headlite operation unless you still make them so.
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90 LSC., K.B. super charged, ported lower intake with full length heat shield, straight exit SS tail pipes, headlite slave relays, HD radiator, HD trans cooling, Baumann shift kit, A/F and Vac/boost gauges, HD front & rear anti roll bars. |
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#4
September 7th, 2008, 08:47 AM
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Thank you Bluegrass, do you know where the relay is for the lights. I wanted to be able to turn on the driving lights only or in conjunction with parking lights.Where can I find a schematic.
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#5
September 8th, 2008, 07:04 AM
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Look up my name on the search function. I posted a very simple method to do this a few years ago. It is only about a 5-minute, one wire modification.
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1988 Mk-VII LSC 'GTC' clone. (Redfire Clearcoat Metallic) pictures coming soon! 1990 Mk-VII LSC (Sandlewood Frost) 1971 Mustang Mach 1(429 Cobra Jet) 1976 'Starsky & Hutch' Gran Torino (460 4V) "I'm too old to grow up now!" |
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#6
September 8th, 2008, 02:08 PM
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This is the diagram of fog lamp circuits from an '89 EVTM: http://thelincolnmarkviiclub.org/Gal...4/Foglamps.jpg
There is no relay only for the factory fog lamps themselves. Just the high/low beam relay in the circuit. I wired my fog lights to operate independantly. Took fused, ignition controlled (w/ another relay) power from the starter solonoid through a relay to the lamps. My new dedicated fog lamp switch triggered the relay I installed. I ran the feed from the factory fog lamp harness to the relay also. This way they operated w/ the original switch as well as the one I installed. I use a pos. signal to trip the new fog lamp relay. By using an ignition source, they can't be left on when the engine is off. Last edited by Magic Al; September 8th, 2008 at 05:03 PM. |
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#7
September 8th, 2008, 03:40 PM
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Only rewire the fog lights if the headlights and fog lights have relays installed. Too much current passes through the switch and it will cause the fuse to routinely blow. Eventually, the switch goes completely. This isn't personal experience, but I warned someone else and they proved my theory.
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My Vehicles: 1985 Continental Burgundy- Awaiting a Destiny 1986 Mark VII LSC Medium Graphite Metallic (1J)- In Process 1986 Mark VII LSC Silver Metallic- Torch Passed 11/01/09 1989 Mark VII LSC Pewter Metallic (17) #1- Limbo 1989 Mark VII LSC Pewter Metallic (17) #2- Daily Driver 2001 BMW 540i Jet Black, Dinan Sprinkles Family Fleet: 1999 Continental Light Parchment Gold Metallic 2000 Continental Light Parchment Gold Metallic 2008 Mercury Sable Light Ice Blue Metallic FIRST Robotics |
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