GM 4 pin style

H104L Voltage boost harness for 1996-2004 GM trucks with 1 volt increase for Lithium batteries

This voltage boost harness fits 1996-2004 GM Trucks and SUV's with oval GM alternator plug. The longer blue wire gets connected to an ignition switched 12V+ source to turn the alternator on and off with ignition. This harness can be used with stock...

P101-L-5 Voltage boost harness for GM 4 pin regulators for a 2.5 volt increase for Lithium or 14-volt AGM batteries

This voltage boost harness fits alternators with a GM 4 pin regulator. The 2.5-volt increase has only been tested on the 4 pin regulators used in Mechman Alternators. If your current 4pin equipped Mechman Alternator voltage is warm/resting at 14.6...

P101-L-4 Voltage boost harness for GM 4 pin regulators for a 2 volt increase for Lithium or 14-volt AGM batteries

This voltage boost harness fits alternators with a GM 4 pin regulator. The 2-volt increase has only been tested on the 4 pin regulators used in Mechman Alternators. If your current 4pin equipped Mechman Alternator voltage is warm/resting at 14.6 volts,...

P101-L-3 Voltage boost harness for GM 4 pin regulators for a 1.5 volt increase for Lithium batteries

This voltage boost harness fits alternators with a GM 4 pin regulator. The 1.5-volt increase has only been tested on the 4 pin regulators used in Mechman Alternators. If your current 4pin equipped Mechman Alternator voltage is warm/resting at 14.6...

P101-L-1 Voltage boost harness for GM 4 pin regulators for a .5 (half) volt increase for Lithium batteries.

This voltage boost harness fits alternators with a GM 4 pin plug and is similar to our "plug and play" H104-L harness. The P101-L-1 gives you the ability to charge in the 15 to15.5 voltage range if you are currently charging in the 14.6-15-volt range. ...

P101-L Voltage boost harness for GM 4 pin regulators for a 1 volt increase for Lithium batteries

This voltage boost harness fits alternators with a GM 4 pin plug and is similar to our "plug and play" H104-L harness. The P101-L is the simplified version of the H104-L which makes it great for secondary alternator setups for a cleaner look or engine...