The Ford Barn

old guy rich · 04-02-2017, 08:38 PM

Hi everyone, can someone tell me if the SOL terminal on the O/D relay is positioned at the top as it is mounted on the firewall. In the pics that I was able to find on the net, the relay was mounted with the fuse side facing the steering column. The relay that I have is stamped on the cover with SOL on the bottom and H on the top with it mounted. Only problem is the terminals are stamped just the opposite, looks like the cover might have been reversed at some time. Just want to make sure I wire it correctly. Fuse facing steering column and SOL connection is at the top !! Thanks. old guy rich.

Drbrown · 04-02-2017, 10:00 PM

I'd go by what's stamped on the terminals. As you say, cover could have been reversed. My OD has a 30 amp Bosch relay mounted on the engine side of my firewall, separate from its 30 amp fuse.

Paul Bennett · 04-02-2017, 10:05 PM

Yes - But I notice amungst my motly wiring, that the SOL stamped into the OD relay cover is UPSIDE DOWN.

40cpe · 04-02-2017, 10:28 PM

Picture 3 should answer it for you. It is oriented like your relay in the picture.

rotorwrench · 04-03-2017, 12:00 PM

Most all of the old original RBM overdrive relays from that era have the SOL stamped upside down on the cover as mounted to the firewall so it looks just like the photo in post #3 above. the ignition fuse is always on the drivers side (of left hand drive) of these units. Someone may have pulled the cover and reinstalled it wrong. Sometimes the points do need cleaning on these old relays.

old guy rich · 04-03-2017, 12:04 PM

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Problem solved, great help, thanks very much guys.

04-02-2017, 08:38 PM	#1
old guy rich Senior Member Join Date: Jun 2015 Posts: 199	Overdrive relay Hi everyone, can someone tell me if the SOL terminal on the O/D relay is positioned at the top as it is mounted on the firewall. In the pics that I was able to find on the net, the relay was mounted with the fuse side facing the steering column. The relay that I have is stamped on the cover with SOL on the bottom and H on the top with it mounted. Only problem is the terminals are stamped just the opposite, looks like the cover might have been reversed at some time. Just want to make sure I wire it correctly. Fuse facing steering column and SOL connection is at the top !! Thanks. old guy rich.

04-02-2017, 10:00 PM	#2
Drbrown Senior Member Join Date: Oct 2013 Location: Glens Falls NY Posts: 1,403	Re: Overdrive relay I'd go by what's stamped on the terminals. As you say, cover could have been reversed. My OD has a 30 amp Bosch relay mounted on the engine side of my firewall, separate from its 30 amp fuse.

04-02-2017, 10:28 PM	#4
40cpe Senior Member Join Date: May 2010 Location: Star, MS Posts: 4,161	Re: Overdrive relay Picture 3 should answer it for you. It is oriented like your relay in the picture.

04-03-2017, 12:00 PM	#5
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 18,006	Re: Overdrive relay Most all of the old original RBM overdrive relays from that era have the SOL stamped upside down on the cover as mounted to the firewall so it looks just like the photo in post #3 above. the ignition fuse is always on the drivers side (of left hand drive) of these units. Someone may have pulled the cover and reinstalled it wrong. Sometimes the points do need cleaning on these old relays.

04-03-2017, 12:04 PM	#6
old guy rich Senior Member Join Date: Jun 2015 Posts: 199	Re: Overdrive relay Sponsored Links (Register now to hide all advertisements) Problem solved, great help, thanks very much guys.