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40cpe · 10-16-2014, 04:34 PM

That relay looks much like a factory OD relay. I don't know how much noise is in the interior of your car while on the road but road noise could drown the clicks out. The relay is sure to be closing to put enough juice to the solenoid to make the grinding sound. If you suspect it is not closing, run your test meter leads to the relay and take it for a drive. Or install a pilot light. Or by-pass it with a toggle switch.

10-16-2014, 04:34 PM	#58
40cpe Senior Member Join Date: May 2010 Location: Star, MS Posts: 4,024	Re: R10 Overdrive Issue That relay looks much like a factory OD relay. I don't know how much noise is in the interior of your car while on the road but road noise could drown the clicks out. The relay is sure to be closing to put enough juice to the solenoid to make the grinding sound. If you suspect it is not closing, run your test meter leads to the relay and take it for a drive. Or install a pilot light. Or by-pass it with a toggle switch.