/ I Needed a Way to Test My Trailer in the Shop
So I googled '7way trailer tester' and they were all very expensive. What do I do? I made my own. 30 minutes and less than $20 + some stuff I had in my shop. And it works.
/ Here's What I Did
I found a small project box in my shop (it happened to be the right size: about 7"x4"x2").. and I had an idea. I also found 5 momentary switches, one on/off switch, and a female 12v port that I already had, and a pile of wire. So off to AutoZone I go — I picked up a $10 female 7way connector.
30 minutes of wiring later, and I had a valid 7way tester. I didn't make a wiring diagram, but basically 1 wire (black) on the 7way is ground, and the other 6 are all 12v positive, and each of those go through a switch (the aux one goes to on/off, and the other 5 go to momentary switches), and then I just crimped all the right ones together.
