Headlight wiring harness with relays

After reading horror stories about the headlight/wiper combo switch melting due to the full amperage of the headlight beams going through the switch, I decided to install a wiring harness with a set of relays.  MSA sells a great plug-and-play unit which is built by an avid Datsun Electrician, although I decided to save some money and build my own.  At the end, I invested about $40 and have much better low and high beam headlights, and will save the combo switch.

I started off with a cheapo pre-made relay wiring harness which I acquired from Amazon for pretty cheap (Amico Car 30A Fuse 2 H4 HID Headlight) and a set of harness plugs and some wire/shrink wrap.

 

I next needed to extend the wiring harness and include the correct harness plugs to allow me to plug directly into the Datsun wiring harness as a feeder and then into the headlights directly.

 

Then it was as simple as unplugging the existing headlights and plugging in my new harness, including connecting it to the battery to power the relays.

As reference, here's the best diagram/explanation I can find.  Thanks go out to the original author.

Door weather seals

After 42+ years of service, I decided it was time to seal up the doors better so if I get caught out in the rain I wouldn't be sitting in water.  What was left of the old seals was quite a mess

   

When I purchased the car, I was excited because it came with what appeared to be a full set of rubber weather seals for the doors, hatch, etc.  The seals that came with the car were made for the 240z, although as many have experienced they were from a company called Precision, the doors would not close, even with a hip slam.  And it was more than adjusting the door striker plate would resolve.  Luckily I did not glue these in place so they came off very easily.

Upon further investigation, I decided to look for other vehicle weather seals that would fit the 240z.  The best option would have been an early 2000's Kia Sportage, which my local junk yard (Victory Auto Wreckers) said they had.  After a pilgrimage to Victory on my way home from work one day I was unable to find the Sportage.  I did however start looking at all of the other cars that they had.  The next best option appeared to be a late 90's POS Chevy Cavilier.

After removing and then finally cleaning up the weather seals, I was quite happy with what I had obtained for $5.00

 

Once installed (without glue for the first try), I found that I needed to cut about 8" off and then bend the straight seal around the 90 degree corner of the 240z's door.   I do plan to glue these in place eventually, but the wealting appears to hold it on very well.