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Laycock Overdrive Serial Numbers
Laycock Overdrive Serial Numbers





Defender (2007-2016, Puma) Interior Trim.Defender (2007-2016, Puma) Hoods & Components.Defender (2007-2016, Puma) Heating & Ventilation.Defender (2007-2016, Puma) Engine & Gearbox Mountings.Defender (2007-2016, Puma) Engine Components.Defender (2007-2016, Puma) Control Cables.Defender (2007-2016, Puma) Body Fittings.Let me know what harness or wiring you have and I'll describe the wiring steps. Do you have a stock OD cable cable harness for a SV ? If you choose to go with the non self canceling switch, the wiring is simpler and easy and does not requite the extra resistor or diode that I sent with the kit. Once you decide which control arrangement you prefer you can just wire it as I described if you choose and obtain the self -cancelling switch. If you have an earlier tranny, with Revers Gear in the up and left position, the switch locations are reversed. ( I am 99% sure, but maybe someone can confirm this.) The Backup switch is the on the other side. If you have a SV tranny, with Reverse gear in the Right and back location, then the Lock out switch is on the right side of the shift box.

Laycock Overdrive Serial Numbers

One of those switches is for the back up lights and the other is the 1,2,R lock out switch. The other 2 pairs go to the switches on the tranny shift box. That powers the OD solenoid and comes from OD relay. The one going to the OD Solenoid is simple. You'll need to figure out the 5 wires going to the tranny. But you may be surprised when upshifting into 3 that the OD comes back ON as soon as you shift into 3rd, unless you turned it OFF after going to the lower gears. So when downshifting to 2 or 1 with a non-cancelling switch the OD drops out of OD. Both switches make use of the lock out switch on the tranny to prevent engaging in 1,2, or Rev gear.

Laycock Overdrive Serial Numbers

The only issue is that the self cancelling has some convenience and safety features. You can control a Type D OD, (and almost surely a Type A as well) with either a self cancelling switch and relay or with as simple ON/OFF switch.







Laycock Overdrive Serial Numbers