Cruise Control

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Rick78efi460
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Cruise Control

Postby Rick78efi460 » Fri Mar 20, 2009 10:33 pm

In the bumpside trucks and up,including 1988 (but not limited too), if you install LED tail/Brake lamps your factory cruise will not work.
The cruise grounds through the brake lamps. LED won't flow enough current.............By design, applying brakes sends current to lamps and cruise loses ground to cancel.
Rick


1975 F600 Tow Truck
1978 F250 Crew Cab Ranger XLT SB 460 C6
1978 Bronco Ranger XLT EFI460 C6 4X4
1978 Bronco Custom 400 C6 4X4
1986 Bronco II 4X4

and a bunch of others

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nohsp4u
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Re: Cruise Control

Postby nohsp4u » Fri Mar 12, 2010 2:37 pm

I know if you put LED taillights in they flasers will flash too fast, there is a special flasher unit you buy form the lighting stores to fix this. Maybe it will also fix the cruise issue.
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godspeed
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Re: Cruise Control

Postby godspeed » Fri Mar 12, 2010 10:05 pm

Nope. Turn signals and brake lights are two different circuits.

The new flasher unit has a lower the capacitor value to match the higher resistance of the LEDs. The product of the two (R x C) is what sets the blink rate.

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