I am trying to hook up my temp sending unit for factory gauges.

I have two wires that I would guess hook up to the unit. Neither of them do.


Here is a pic of the two wires:
http://members.shaw.ca/zims23/DSC00420_rsz.jpg

I bought one of these temp sending units
http://yearone.com/serverfiles/part.asp?pid=BF620&c=0&e=0&cat=4&hid=412AA50683

Which wire is for the sending unit? Do I just put a different connector on the wire? What is the other wire for?

Thanks

The green wire one slides on the nail head of the temp sender. There is supposed to be a slot in it on the side you are not showing.
The other wire looks to be the one that goes to the oil sending unit.

Is that a new wiring harness? If so, then yes, it may be set up for idiot lights and not gauges. As Jim said, there should be a slot in the connector which will slide horizontally over the nailhead.

Don't forget your idle mixture screws. What kind of carb is that? I see a side inlet.

I already have my oil sending unit hooked up on the filter housing. This wire would not reach.

Yes it is a new wiring harness. I'll try to get a new connector. What is the other wire for?

solid black wire? It looks like it has a post socket. Perhaps idle stop solenoid, if it has a white stripe.

While we're talking sender wire hookup, what color is the wire to the idiot light oil sender for oil pressure (67)? I figure I ought to have the idiot light hooked up too since I probably won't notice if the gauge goes to zero before it's too late.

Not at home but I believe it is the blue wire coming off the same area as the heater fan.

Blue sounds right. Test it, though, before you trust it.

Blue oil, Green temp., Black could be for the heater fan.

Ron is correct on the colors. I got a replacement harness with the wrong connector housing too. I complained to the manufacturer, M&H and they sent a new housing which is easy to install.

The black wire in your pic is for the idle stop solenoid, if you have one installed. If not, just leave the connector in the harness. Since I have the same harness installed in my car, it would be interesting to see a OEM temp sensor connector.