Dash wiring questions

[Pinbill]

Hey Everyone,

I have my new dash in and its time to connect the wires. The wires to the relay on the steering column next to the buzzer came off with the dash. I wasn't able to mark the connections. Are they directional or can I put them either way?

I need to say that connecting the door buzzer was pretty difficult.

Thanks for the help,

Bill

[Pinbill]

Fuse box wiring question. It seems like there is only one way for the fuse box wires to go. I just want to be safe before I connect the battery. My plan is to attach the blue/white wire to the b/w wire on the cigar lighter and the black male bullet connector on the left to the other cigar lighter connection. Then white male connection goes to the female black on the right. Does that sound right? Car is a 1971 240z with an 8/71 build date and a short wire fuse box. Thank you for the help, Bill

[SteveJ]

Something isn't right with the wire colors in your description.

The blue/white wire from the fuse box should connect to a blue/white wire that goes to the cigarette lighter. That is the purpose of the circuit.

A black/white wire is typically a switched source that comes from the ignition switch. There is also wiring in the center stack area for it to connect to an inline fuse going to a green wire for the electric fuel pump that Nissan didn't install for the US market. (Note: There is another black/white wire that goes from the tachometer to coil positive, but we won't take that tangent right now.)

 

[Pinbill]

Thanks for getting back to me.

I didn't see a black and white wire. I will dig around for it. The wiring in the car is very original except for a dealer installed AC unit.

The white wire coming off the  fuse box, what color wire does that usually connect to?

Bill

[SteveJ]

Isn't that a black/white wire in your photo with the male bullet? If it is, it should not have voltage when the battery is connected and engine on. Otherwise it could short.

The white wire should be connecting to another white wire with a female bullet. I'm thinking that white wire with the female bullet is in your photo, but the insulation color is obscured by the black wrap. It feeds the brake lights/hazard lights and the horn (2 circuits).

[Pinbill]

You nailed it, the white wire is covered with black sheathing. I feel comfortable with all the connections in the climate control area. I need to dig for the wires that connect the dome light to the door switch and figure out the flasher on the steering column. I am ready to start it up though and do some testing.

If anyone knows about the orientation of the wires on the steering column flasher please let me know. I might just try it and see what happens.

Thanks again for the help,

Bill

[BoldUlysses]

28 minutes ago, Pinbill said:

If anyone knows about the orientation of the wires on the steering column flasher please let me know. I might just try it and see what happens.

I assume you mean the wires coming from the turn signal switch?  If so, this might help:

That's from mine a couple of months ago.  It's a 1972 though.  The only wires that don't match up color-for-color and connector-for-connector are the green-to-white and blue/white-to-black/yellow connections.

[Pinbill]

I am ok with the combo and blinker switch and the wiring in the tunnel area is ok too.  I started the car and tested everything. It all works. I had a little scare with some gauge light bulbs that had a weak ground. Everything works. 

This is the flasher relay I am talking about. I didn't see it when the dash came up. It unplugged itself and I lost the wiring orientation.

Bill

[BoldUlysses]

It doesn't matter AFAIK.  I tried it both ways when troubleshooting an electric issue with mine, and it didn't make any difference.

Fortunately it's pretty easy to reach the connectors (albeit blind) if the HVAC panel is removed.

[Pinbill]

Right on, thank you. I am headed out to start buttoning things up. Things are pretty clean under the dash now. Heater box is rebuilt, heater core is flushed, new hoses, new coolant valve, upgraded relay harnesses, new Zclock, new dash. Here is a little car porn.