Very simple !!!!! 
http://www.personal.psu.edu/users/r/a/rae125/checkeng.html
Ignore the part where it says you need to use a analog voltmeter. This is only for the 83 - 84 MKII's. For the 85 - 86, just turn the ignition key to "on" (like on your MKIII).
http://www.personal.psu.edu/users/r/a/rae125/checkeng.html
Ignore the part where it says you need to use a analog voltmeter. This is only for the 83 - 84 MKII's. For the 85 - 86, just turn the ignition key to "on" (like on your MKIII).
