help - wiring diagram

[delbalso]

I have an 89 24sx.

I have a buzzing sound from behind the dash.I isolated it to a relay behind the fuse panel inside the car.I tested the relay and it's OK.The wires going to this relay are as follows:Pin 1 brownPin 2 white/redPin 3 pinkPin 4 blk

Pins 1 and 2 are to acuate the relay and pin 4 is grounded therefore pin 4 (pink wire) is connected to a component.The pink wire runs toward the back of the car (seen when floor carpetb removed)I believe it's wire white/red (pin 2) that's the problem

Can some one tell me what wires white/red and pink are cobnnected to?

The wiring diagrams in the haynes manual doesn't cover this. I plan to get a nissian manual but I need this info asap.

Can anyone helpThank-you in advanceRobert

PS. Here are some measurements that I took.Igntion On Pin 1 12.90 V with respect to chassis groundIgntion On Pin 2 2.25 V with respect to chassis groundRelay starts buzzing only with engine running and seems to go away as I accelerateEngine Running Pin 1 13.4 V with respect to chassis groundEngine Running Pin 2 9.0 V with respect to chassis ground

[Infinitiguy19]

I am not fully sure but you might want to take a look at the service manual if you haven't already: Nicoclub.com/FSM.

Sorry I can't help more.

[Biggins240sx]

If someone can tell me how to post pictures from my computer i can put some wiring diagrams on here.