bflower said:
currently working on my 95xr200. what a nice trail ride, looking forward to a night ride! Bare with me as I am awful at electrical at best:banghead:. As i understand this post i will need 3 grounds? one from light one from regulator and one from spare pink wire? where do i get hot if regulator only has 2 wires and one is tied up with ground, 1 with incoming hot. where do i find nice silicone factory bullet connectors or should i get out the solder? and lastly how do i keep this from looking like an over decorated christmas tree with excessive wiring hanging everywhere? Thanks crew
Ground is ground, multiple grounds are just a convenience to save on wire that is why some alternators are internally grounded, to save on wire. The engine cases and the bike frame become one big common conductor. All of the XR200s have two section alternators; one sectionpowers the ignition and the other provides power for the lights. Both of these sections output AC power. Your 93 alternator is wired a bit different than the earlier XRs; the lighting section is not internally grounded and has two wires (yellow & pink) going up under the tank. At this point there should be a pink jumper connecting the two together. The black/red wire goes to the CDI unit.
The two wire output is usually provided for use with a battery charging system but can be used for AC lighting.
To make trouble finding and follow on work easier you may want to consider following Hondas convention for wire colors by using green wire for the grounds, almost any other color for the hot wires except red which Honda uses for DC hot. White and Lavender are often used for hi/low beams and yellow or yellow/white for AC hot.
Pick the pink wire as a ground (the yellow will be the "hot") and connect it to the frame, Make up a little jumper with a connector to fit the pink wire with a lug and on the other end to suit the nearby coil ground bolt.
You can also mount the AC regulator under the tank or on the steering head, I used a bolt hole on the left side of my steering head because it was convenient, and I ran the two wires back under to tank to connect to the "hot" yellow wire and ground point at the coil. Either wire on the AC regulator can be grounded, pick a color.
Make up a wire to run from the "hot' yellow to your light switch, you might want to put a Y in this wire under the tank as a connection for the regulator. From the light switch run a wire to the light, connect the base of the light socket to ground and your done.
If you splice any wires I suggest soldering and then covering with shrink tubing. I also solder the wires into the connectors after crimping. Use dielectric grease on all of the push connectors and light bulb bases as a water seal, available at automotive stores.
Turn the light switch off and start the bike, turn on the light. stop the engine and try to restart, if the engine is hard starting switch the pink yellow alternator wires; make the yellow ground and the pink "hot".
On edit: Clarification on ground point; when I said the ground point was on the coil mountingt bolt that applied to the early XRs. The 86+ models use the CDI module attach bolt for the ground.
Hope this helps
Edited by chuck4788, 27 November 2009 - 02:15 PM.