ronsschultz
Cadet
- Joined
- Feb 24, 2010
- Messages
- 9
I recently bought a 78 Seawirl with a Mercruiser 140 hp stern drive. Having problems with the Trim Pump. Appears the previous owner messed up the wiring and there was a dead short, not to metion the selenoid is bad. Can anyone tell me the correct wiring? I have ordered a repair manual and hoping it will contain what I need as well.
From the switch there is a Red (Hot), Green, Purple, Blue
I have Blue and Green coming from top of pump.
Top of pump also had a post for what I think is for a negative cable.
I have two wires coming in from (I think) the trim limit switch, but the are not color coded real well. Someone tried to color them with a blue and red it looks like.
I have positive and negative cables from battery.
I have only been able to find a diagram from a Prestolite Trim Pump, but it has two selenods, with this only has the one.
Any help would be greatly appreciated. I have found tons of useful information in this forum already.
Thanks
Ron
From the switch there is a Red (Hot), Green, Purple, Blue
I have Blue and Green coming from top of pump.
Top of pump also had a post for what I think is for a negative cable.
I have two wires coming in from (I think) the trim limit switch, but the are not color coded real well. Someone tried to color them with a blue and red it looks like.
I have positive and negative cables from battery.
I have only been able to find a diagram from a Prestolite Trim Pump, but it has two selenods, with this only has the one.
Any help would be greatly appreciated. I have found tons of useful information in this forum already.
Thanks
Ron