Join Date: Oct 2007
Location: So OR
Thanked 3 Times in 3 Posts
iTrader Score: 0 reviews
I've been having problems with the charging system cycling on/off. Tried to track down a shorted wire/connection but no luck so I decided to bypass the PCM & install an external voltage regulator. After reading the posts on here regarding the installation I mounted the new external regulator on firewall, connected field wires from alternator to the regulator according to previous threads. I also connected switched power to the wire at the "top of the pyramid" on the regulator. The system is now charging but is fluctuating from 14-14.5 volts causing a pulsing of the interior lights and headlights. Voltage at the regulator on the two wires coming from the alternator are 14-14.5 volts on the wire with switched power and +/-8-14 volts on the other wire. Is that much of a change in voltage on the other field wire common? Any ideas on how the keep the voltage from cycling & causing lights to pulse? Any help is appreciated.
94 12V 2500 4x4 RCLB, KDP tabbed, pyro/boost/fp, 4" turbo back, BHAF, boost elbow, #5 TST, DSS, 5sp swap complete, Bosch 300's, no FSS, ext volt reg