During my incarceration and social distancing(the upside of distancing is that I really hate most of the people I have to be near in public) I have been trying to find things to stay occupied.
First, some background: I recently had a problem with starting and running my latest K100RS. As part of the troubleshooting I wanted to see if and when the injectors were firing. Jury rigging an LED and alligator clips was a huge pain in the azz and screamed for a better solution. Once I got the bike running it was time to see if there was a better way to test the injector harness.
Here's what I have:
For an LED that works on 12VDC and doesn't care what the polarity is, I got a small full wave rectifier power supply with LED indicator light.
https://www.ebay.com/itm/AC-To-DC-Power-Supply-Converter-Full-Wave-Rectifier-Circuit-IN4007-DIY-Kit/391974288823?hash=item5b437cfdb7:g:jOUAAOSwAWladPubAnd a connector to plug into the bike's wiring harness:
https://www.ebay.com/itm/EV1-to-EV6-Fuel-Injector-Adapter-Harness-ls1-ls2-each-Jetronic-Connector-LS3/232106882967?hash=item360aa5f797:g:bu8AAOSwCGVX9-6-First, I assembled the power supply. Since I didn't need it, I left off the output connector, and because I wanted fast response from the LED, I left off the capacitor.
Next, I cut the unused connector off the cable, leaving the Bosch connector and the wires to connect to the input of the power supply.
The whole job took about a half hour and here is the result:
DSCN3877.JPG (55 kB . 768x516 - viewed 521 times)Just plug it into an injector connector on the engine harness and crank the engine. The LED flashes every time a pulse is sent to the injectors. The hardest part of the test is getting the goddam connector off the injector. I cut the locking tabs off the sides of the test connector just to make it easy to unplug after the test.
