Mercathode Controller
#2
Registered
I wish I could help you - I checked in my repair manual - however this is what it said - there is no mention of a white wire - We have a 2000 7.4 mpi all stock
a - ORANGE Wire - From Electrode On Transom Assembly
b - RED/PURPLE Wire - Connect (Other End) to Positive
(+) Battery Terminal
c - BLACK Wire - From Engine Harness
d - BROWN Wire - From Electrode on Transom Assembly
3pointstar
a - ORANGE Wire - From Electrode On Transom Assembly
b - RED/PURPLE Wire - Connect (Other End) to Positive
(+) Battery Terminal
c - BLACK Wire - From Engine Harness
d - BROWN Wire - From Electrode on Transom Assembly
3pointstar
#3
Possibly the white wire found on the black box (vs the old blue control box) is a connection point for the latest type of Merc's MerCathode corrosion monitoring system that on some models seem to be using a green flashing light to help let the user know if the system is working correctly or not as indicated in the following video from Mercruiser,
Hum Well I cannot seem to be able to make the You Tube video work above via a link so you'll have to search online ( MerCruiser 4.5L / 6.2L Sterndrive - MerCathode System ) and watch the video if the following two tries don't show up either.... https://www.bing.com/search?q=MerCru...R&pc=EUPP_DCJB
https://www.bing.com/videos/search?q...4EEA&FORM=VIRE
Hum Well I cannot seem to be able to make the You Tube video work above via a link so you'll have to search online ( MerCruiser 4.5L / 6.2L Sterndrive - MerCathode System ) and watch the video if the following two tries don't show up either.... https://www.bing.com/search?q=MerCru...R&pc=EUPP_DCJB
https://www.bing.com/videos/search?q...4EEA&FORM=VIRE
MerCruiser Blue (Now black) Mercathode control unit.Part Number: 42600A09
Blue control unit. Fits R, MR, Alpha One & Gen II, and Bravo drives.
Please note that as of June 2016 the casing is now black in colour.
The operation of the unit and part number have not changed.https://www.ebay.co.uk/itm/Mercury-M...-/161178203930
Please note that as of June 2016 the casing is now black in colour.
The operation of the unit and part number have not changed.https://www.ebay.co.uk/itm/Mercury-M...-/161178203930
Last edited by lakematdude; 12-06-2017 at 04:34 AM. Reason: Can't make You Tube video link work!
#4
Registered
iTrader: (1)
Possibly the white wire found on the black box (vs the old blue control box) is a connection point for the latest type of Merc's MerCathode corrosion monitoring system that on some models seem to be using a green flashing light to help let the user know if the system is working correctly or not as indicated in the following video from Mercruiser, https://www.youtube.com/watch?v=kdh3...pqD2ldF4AaABAg
For some stupid freakin reason most links don't show up on this site until they are quoted.
#5
Registered
Does the new one cast a more powerful field than the old. Most posts I've seen wound up with the owner requireding 2 per engine to make a field powerful enough to prevent corrosion. Testing for field is a PITA too.