Electrical question: Anyone know what the relay mounted near the hood cable release k

[9teen7t240z]

Am trying to install some new interior light door switches in my 1970 240z and had to remove the kickpanel to access the switch. In the process, I had to disconnect the relay switch that is suspended from the hood cable release mounting in the car. While there, I had the brilliant idea of disconnecting the wires from the relay in order to clean the contacts, but failed to label the wires for re-connect. This relay has 3 wires, and has labels that read "H", "B", and "S" on it. I could sure use some help on determining what the purpose of this relay is, and, more importantly, in finding out which wire connects to which contact on the relay.

Any help would be greatly appreciated.

Mike

[Zed Head]

I would check the Body Electrical section first - http://www.xenons30.com/reference.html

Your year should be in here since your screen name has "240" in it.

[SteveJ]

Wire colors and pictures would help, too.

[9teen7t240z]

After scanning the FSM from Zedhead's link, it looks as though this relay is for the horn. There are 3 wires in total, 2 green ones and one green/red wire. If this is, in fact, a switch for the horn and no other purpose, I would just need to know which wires to attach to the respective terminals on the relay.

[Arne]

It is the horn relay. "H" is to the horns. "B" is the power from the battery. "S" is the switched lead from the horn button. The relay must be mounted directly to the body as it is self-grounding.

[9teen7t240z]

Wonderful...thanks Arne for confirming that I read the FSM correctly. And thanks to Zedhead for forwarding the link. Just last week I was finally able to acquire the hardare for the hornpad.....my car hasn't had one since I bought it. Once I finish restoring the new, old, steering wheel that came with the horn hardware, my little Z should finally be able to warn those VW bugs to get out of the way while I pass them on the highway:)

[9teen7t240z]

I do have another question regarding the current topic. There were actually 2 relays mounted next to each other.....one, the subject relay, was wired as mentioned above. The other relay was not wired at all....my mechanic figured that the PO had just replaced a bad relay without removing the old one. However, when I removed the one that "was not in use", I noticed slightly different labeling on it. It is labeled "L", "B", and "S", as opposed to "H", "B", and "S". Does anyone have knowledge as to whether this is just an older, unnecessary relay or whether I might be missing some wiring? (the terminals and the relay switch looks identical to the horn relay....with the exception of the aforementioned difference in labeling.

Thanks again,

Mike

[Arne]

I think your mechanic is correct. The "L" probably means "Load". My car only has the one single relay on that side.

[9teen7t240z]

Cool.....what a relief. Thanks again, Arne.

[zKars]

Green/black on the left, Green center, Green/Red on the right.

Hope that clears it up.

Edited July 23, 2011 by Arne
Clarified wire color description.