The 510 Realm

Wow, Rob! Thank you for those! That is some incredibly interesting information! More great pages saved in my car file! 😍 I'm going to spend some time absorbing it. As far as I know, my car was never an automatic but I don't know if there are any tell-tale signs outside of, well, having an automatic ...

I've got that going for me, at least! I've pored over these diagrams and my color diagrams & I just can NOT find what this thing is for! The wire colors are W/L, G, Y, & B with a 4 prong connector. Even though this looks nearly identical to the passing relay Beo posted, the wiring colors don...

Whatever it is, it's in pristine condition.

Thank you so much, Beo! Those diagrams will be great to have. I'm saving them to my car file. I don't have the button but that passing light relay looks exactly like the one in question! I have never heard of a passing light system in a 510. Wow! I'm going to go out, grab it & take a pic to comp...

Today, while I'm trying to figure out my high beam LED headlight issue I decided to measure the holes in my firewall and 3D print some plugs for them. Sure, I could probably just order them but what fun is ordering $.89 rubber plugs when I can print them myself with a $300 printer and $40 filament? ...

Well, no luck however I am going to take the relay apart & clean the contacts just to be certain. It did click when I plugged it in, though. I couldn't find it on my wiring diagram, either.

Ok, I still have it so I'll toss it in and see! My wiring diagram doesn't show 2 separate relays for the headlights but it's worth a try!
Thanks for the suggestion, Beo! I'll report back in a bit after I've gone out to try it.

You're correct. I took that relay out last year when I changed my alternator over to an internally regulated one. My horn and headlight relays are together on the back of the driver's side strut tower.

Lol! Thanks anyhow, Keith!

Thanks, IH! I tried that as well. Unfortunately, it didn't fix it. I really would like to have my highbeams because I live way out in the rhubarb. Lol! I agree, if I were still in SoCal I probably wouldn't care about it, either.

I have to think my problem is a wonky headlight relay. I dunno.

Yes! That is helpful! Thank you! So it appears as though R/W=Ground R/B= Low Beam R/L =Hi Beam Left R =Hi Beam Right However, the note there says R/W is Hi-beam, where the diagram indicates it's attached to ground and it shows the R/B circled (not R/W). Typo in the diagram? Unless I'm just totally o...

Oh, yes! I've been down that road with LED's, too. That brings to mind, though. What do the wire colors coincide with? Like R/B = low beam(?), R/L=_______, R=_______, R/Y=_________ I just checked and my wires are plugged into the connectors as shown in the wiring diagram. Basically, they're the same...

Thanks, Beo. I'll look into that!

Yep, I have power at all the terminals of all 4 plugs and ground. The lights I have connected (the outers) work great on low; nice & bright with no flickering or anything like that. I thought the late 510 just had the single relay with the 6 wires. I’ve read the early 510’s had 2 separate relays...

Hmm...I might have to drum up another one or a modern conversion then.