I installed an ignition relay last week. Its pretty easy really, basically you are using the power from the ignition switch (white wire) to turn on the relay and let power from the battery flow to the fuse box and the starter and coil. The advantage of this is that all that power no longer flows through the ignition switch.
The process is pretty straightforward. Incidentally, later model cars came with an ignition relay. My car had had it removed at some point! But adding a relay to an older car makes sense to.
Showing posts with label relay. Show all posts
Showing posts with label relay. Show all posts
Wednesday, February 20, 2008
Monday, July 9, 2007
New starter relay
I got a new starter relay today. The old one is on the right, the new one on the left. It cost $3.97 from Advance.
When I went to Advance, they wanted to sell me a $30+ model for the B, and if you look in the Moss or VB catalogs - they also have pretty high priced ones. But it turns out that a relay is a relay and a generic "Bosch" type will do.
It's installed and the engine fires up every time! (well so far).
When I went to Advance, they wanted to sell me a $30+ model for the B, and if you look in the Moss or VB catalogs - they also have pretty high priced ones. But it turns out that a relay is a relay and a generic "Bosch" type will do.It's installed and the engine fires up every time! (well so far).
Friday, July 6, 2007
Starter relay. The case of the missing wires...
Sometimes when I turn the key I can hear the starter solenoid engage, but I just get a click. So I decided to check the relay connections.
This is going to get detailed so grab a coffee..
According to page 78 of Rick Astley’s “MGB Electrical Systems” my late model B should have 4 wires attached to the starter relay.
Brown/White to 30
White/Red to 86
Black to 85
Brown to 87
Here’s what I have:
Brown to 30
Black to 85
White/Red and Brown/White wires connected to each other.
The first picture shows the terminals of the starter relay.
The second picture shows the white/red wires connected (with a headless nail) to the brown/white wires.
The car starts most times, but often it will require several attempts to get past the click.
When I connect the wires according to Rick Astley’s book I get nothing – no clicks, nothing.
My suspicion is that a PO decided that the relay was bad and decided to bypass it. Would the above connections bypass the relay or is there something else going on here? Is it even possible to bypass the relay?? I am guessing I probably should just get a new relay.
I submitted this question to the great folks at mgexeperience.net. I'll see what they say...
This is going to get detailed so grab a coffee..
According to page 78 of Rick Astley’s “MGB Electrical Systems” my late model B should have 4 wires attached to the starter relay.
Brown/White to 30
White/Red to 86
Black to 85
Brown to 87
Here’s what I have:
Brown to 30
Black to 85
White/Red and Brown/White wires connected to each other.
The first picture shows the terminals of the starter relay.
The second picture shows the white/red wires connected (with a headless nail) to the brown/white wires.
The car starts most times, but often it will require several attempts to get past the click.
When I connect the wires according to Rick Astley’s book I get nothing – no clicks, nothing.
My suspicion is that a PO decided that the relay was bad and decided to bypass it. Would the above connections bypass the relay or is there something else going on here? Is it even possible to bypass the relay?? I am guessing I probably should just get a new relay.
I submitted this question to the great folks at mgexeperience.net. I'll see what they say...
Subscribe to:
Posts (Atom)
Posts
