1973 240Z Wiper Relais wiring - HELP!

[CallMeAl]

Hello everyone!

I desperately need help with the wiring of the wiper relais. I have chosen the path to completely rewire my car with an universal wiring harness - uuunfortunately I have ripped off all plugs from the old harness and recycled some plug housings already - so I am not able anymore to trace which wire colors went to which contact on the wiper relais. Until yesterday I was not even aware that the wiper motor & switch were connected to a relais in between - only after studying the "Windshield Wiper Motor Connecting Diagram" I came to the conclusion there´s more than the motor and the switch....
Unfortunately none of the wiring diagrams I have found, show the relais.

I hope somebody with a 73 wiring harness can help me out and tell me which wire color goes to which connector at the wiper relais. ??

Many thanks in advance - any help highly appreciated!

Lars

[dutchzcarguy]

Don't sell the bear before you have killed one... is a dutch saying i thought about when reading your trouble..   3 things..  first make pics and second make pics and third... do i need to say?...

[dutchzcarguy]

Btw there IS a relais and some contacts in that schematic..  contacts left and relais coil in top mid..  get yourself an electrician who understands car electrics

[CallMeAl]

1 hour ago, dutchzcarguy said:

Btw there IS a relais and some contacts in that schematic..  contacts left and relais coil in top mid..  get yourself an electrician who understands car electrics

In the schematic I have posted, there is a relays -  yes - BUT it does NOT contain any wire colors nor does the relais itself contain any pin markings on it. No 240z wiring harness diagram shows the relais. Only that schematic.

So there´s no way guessing nor measuring what contact goes where.

Anyway, thanks for the good meant comments ? 
 

Meanwhile I have received some pictures from a 73 owner of the corresponding plugs - maybe helpful for others struggling with the same problem.

I have learned, that the 28820-N3300 unit is responsible for the intermittent function of the wiper - it should even be possbile to wire the wiper motor and switch directly, loosing the intermittent function only. 
From the pictures and my remaining wirning harness I will now figure out the correct wiring of the 3 components. 

[SteveJ]

Look through the 74 BE section and wiring diagrams. They should be available on this site. I was helping a friend with his 73 when I realized that the wiring I saw didn't match the 73 FSM. I then compared it to the 74 FSM and found that it matched up better.

[CallMeAl]

12 minutes ago, SteveJ said:

Look through the 74 BE section and wiring diagrams. They should be available on this site. I was helping a friend with his 73 when I realized that the wiring I saw didn't match the 73 FSM. I then compared it to the 74 FSM and found that it matched up better.

PERFECT - thank you very much - that was the missing link - in the 74 260Z service manual - BE Body Electrical page 61 the correct drawing with explanation of each wiper intermitter relais contact was found.

[SteveJ]

Yes, I'm bad about discovering something wrong with the electrical diagrams and not telling everybody.