SteveJ

This is a replacement box sold by MSA, but the connections are the same as stock.

I'm guessing this one: https://www.amazon.com/12X12-inch-25-Inch-Thick/dp/B07GL9MHW7

I believe they should have connectors like the 1P (1 position) connectors on this page: https://easternbeaver.com/Main/Elec__Products/Connectors/312_Connectors/312_connectors.html

It also lights up the hazard switch

Take a photo of where the switch is mounted on your 5 speed. I have a truck 5 speed in my 240Z that never had a working reverse switch until last year. However, at first I didn't have it in the right location. Fortunately @Zed Head posted a great picture showing the correct location for the switch. I didn't realize there was the "top gear" switch, and that was where I was trying to connect the reverse switch.

I'm not sure why so many people are obsessed with that. In about 40 years of driving, I can't ever recall seeing a need to use the dimmer.

Thank you for confirming. While I try to find good products to substitute in for old school parts, there's a lot of opportunities for others to contribute.

And don't forget about @Carl Beck

I know William posted on Facebook not that long ago.

@kully 560, were these the bulbs you used? https://www.amazon.com/dp/B0B9MGSX7K

I had the dual Webers on my 240Z when I first bought it. Andy Craig suggested I convert to SUs when I went to him to rebuild the engine 27 years ago. I agreed and never looked back. I think I sold the Webers about 18 years ago. When you consider a member over at Zcar.com got a Z into the 12 second range on SUs (https://www.zcar.com/members/norm-the-12-sec-dual-su-dude.1912/), I don't think the SUs are holding you back too much if they are in good shape and balanced properly.

I think I'm making headway. Here's a breakout of the 73 wiper wiring from the FSM. The problem is that it shows 9 wires whereas reality has 7 wires. This comes from the wiring diagram showing redundant connections for power and ground. Now that leaves other issues that I need to resolve: Is the YG wire I identified in my first post the power wire? If so, why is it coming from the engine harness? Is it connected to the wiper motor fuse? Would the wiper motor work on the washer push button without the blue wire connected? In the 73 relay, it's a power source. It appears as though it may not be needed for the Sentra relay. I guess it's about time to break out my meter.

For some reason in the past, I came across this part number for a Sentra Intermittent Wiper Relay part number: 28510-1M200 It appears as though it might still be available. This is the wiring diagram from the EL section of the Sentra FSM: Note that it is 7 wires. Edit: Oops, I finally noticed that there is no pin #4. That fits an observation that I made after I posted this. I'll have to see if this is a fatal flaw in my effort. Here is pin out on the 73 Intermittent Relay: It seems pretty close to the same. I just have to trace out the wires better for the 73.

Post a link to the bulbs you bought.

Okay, I made a short video to demonstrate.