1st off, I have searched for about an hour now, about Tachs, wiring, adaptors and all.. This is what I have.
1976 Evinrude 135hp/1970 Switzercraft. Has a tach included (doesn't work) So today I pulled the tach out, it has only 2 wires, and a rotary dial. The wires are Yellow/Black. They are just hanging there. So essentially I have NO TACH..
I am wanting to install a New tach, I have been looking at some on ebay. The problem is how am I supposed to wire this sucker.. I have seen were some people have purchased adaptors to plug into the RC. I looked and I didn't see anywhere an adaptor would connect..
So Im going to go with option two, UNLESS someone can tell me where to find this "adaptor plug." I know Im going to hook the black wire to a common ground, I know the positive wire needs to go to the ignition wire, how do I go about connecting this? Just remove the igintion from the RC and connect the wire?
Next onto the signal/pulse, I see on the net were my rectifier is supposed to have 4 wires? yellow, Yellow-Gray, Gray, and one more not sure of color.. On the interenet I have found my rectifier P/N 18-5708 this rectifier has 3 wires, 2 yellow and 1 red. Do I need to connect the pulse to one of those yellow wires.
Any info would be greatly appreciated guys, this is a great site and I want to thank you all in advance.