Have a 1990 Vert. Found this diode hanging down near the oil pressure sender. Can someone please tell me what it is for and where does it mount. Found a similar one mounted to the trailing ignition coil bracket. Thanks.

 

It's a capacitor. Smoothes the signal from the oil pressure sending unit to the oil pressure gauge.
Mounts to the leftmost bolt of the clutch slave cylinder... Or wherever you want, really, as long as it's bolted to ground.

 

/\..yep..as he said!

 

and plug your oil pressure sender back in too

 

Thanks. I guess I forgot to mention it was an automatic...

 

Thanks, will do, but I have to remove the old sender and install the new one first.