What are these relays?

[weewass]

On the first image, These are relays mounted to the firewall above the brake booster.

The second picture, I know the three round ones are the light relays, but there's a large square shaped one to the right of it. Anyone know what this is?

TIA

[JohnS]

That's your voltage regulator.

[weewass]

which one? next to the light relays I assume?

[JLENHAM]

Yes, voltage regulator is the rectangular next to the three round. I know the large box to the right in the first photo is emisions related, and I suspect the boxes to the left are as well. Mine is a 73, so I don't (didn't) have quite as many odd devices under the hood.

[maconmike]

yes, first pic is of emissions stuff - second pic, box to right is voltage regulator --

[Guest Anonymous]

The square emissions relays are standard auto-style relays that are plug-in replacements for your round relays or the newer style square plastic relays.

I use one as my electric engine fan relay.

[weewass]

interesting. I thought I had already taken out all of the emissions stuff. My car is a '75 and does not require smog. Think I could take these out?

[c.d.iesel]

on the fire wall - yes

they controled the vacuum 2-way valves,(EGR and VAC RETARD)

also on the firewall nearer the distributor

[weewass]

Great thanks guys. I'm a bit worried about that larger one to the right on the firewall. Looks important but I'll trust you. I want to get rid if all unnecessary crap.

[eurotrash]

There's an actual FAQ IIRC, for removal of all that stuff. But you need to strip out and reuse the clear resistor wire that runs to your coil.

Here's my write up on it, but I worked off the post I mentioned above..

http://1leadshoe.blogspot.com/2011/02/smog-harness-removal.html

[maconmike]

you would want to do a search and find the photo - somewhere? - that shows the loom and parts that can be removed - I did it on my '76 (including the parts on the firewall) - but there is one caveat and I'm sure you've already done it - the wire from number 12 fuse to the positive side of the coil -- good luck

[weewass]

perfect, thanks!